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-rw-r--r--misc/cgo/gmp/Makefile38
-rw-r--r--misc/cgo/gmp/fib.go43
-rw-r--r--misc/cgo/gmp/gmp.go368
-rw-r--r--misc/cgo/gmp/pi.go104
-rw-r--r--misc/cgo/life/Makefile21
-rw-r--r--misc/cgo/life/c-life.c56
-rw-r--r--misc/cgo/life/golden.out17
-rw-r--r--misc/cgo/life/life.go39
-rw-r--r--misc/cgo/life/life.h7
-rw-r--r--misc/cgo/life/main.go44
-rwxr-xr-xmisc/cgo/life/test.bash11
-rw-r--r--misc/cgo/stdio/Makefile17
-rw-r--r--misc/cgo/stdio/chain.go43
-rw-r--r--misc/cgo/stdio/fib.go47
-rw-r--r--misc/cgo/stdio/file.go45
-rw-r--r--misc/cgo/stdio/golden.out150
-rw-r--r--misc/cgo/stdio/hello.go11
-rwxr-xr-xmisc/cgo/stdio/test.bash15
-rw-r--r--misc/cgo/test/Makefile26
-rw-r--r--misc/cgo/test/align.go72
-rw-r--r--misc/cgo/test/basic.go134
-rw-r--r--misc/cgo/test/callback.go136
-rw-r--r--misc/cgo/test/callback_c.c12
-rw-r--r--misc/cgo/test/cgo_test.go28
-rw-r--r--misc/cgo/test/duplicate_symbol.go21
-rw-r--r--misc/cgo/test/env.go32
-rw-r--r--misc/cgo/test/exports.go12
-rw-r--r--misc/cgo/test/issue1222.go29
-rw-r--r--misc/cgo/test/issue1328.go30
-rw-r--r--misc/cgo/test/issue1560.go46
-rw-r--r--misc/cgo/test/runtime.c21
31 files changed, 1675 insertions, 0 deletions
diff --git a/misc/cgo/gmp/Makefile b/misc/cgo/gmp/Makefile
new file mode 100644
index 000000000..fc6209f27
--- /dev/null
+++ b/misc/cgo/gmp/Makefile
@@ -0,0 +1,38 @@
+# Copyright 2009 The Go Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+include ../../../src/Make.inc
+
+TARG=gmp
+
+# Can have plain GOFILES too, but this example doesn't.
+
+CGOFILES=\
+ gmp.go
+
+CGO_LDFLAGS=-lgmp
+
+# To add flags necessary for locating the library or its include files,
+# set CGO_CFLAGS or CGO_LDFLAGS. For example, to use an
+# alternate installation of the library:
+# CGO_CFLAGS=-I/home/rsc/gmp32/include
+# CGO_LDFLAGS+=-L/home/rsc/gmp32/lib
+# Note the += on the second line.
+
+CLEANFILES+=pi fib
+
+include ../../../src/Make.pkg
+
+# Simple test programs
+
+# Computes 1000 digits of pi; single-threaded.
+pi: install pi.go
+ $(GC) pi.go
+ $(LD) -o $@ pi.$O
+
+# Computes 200 Fibonacci numbers; multi-threaded.
+fib: install fib.go
+ $(GC) fib.go
+ $(LD) -o $@ fib.$O
+
diff --git a/misc/cgo/gmp/fib.go b/misc/cgo/gmp/fib.go
new file mode 100644
index 000000000..3eda39e17
--- /dev/null
+++ b/misc/cgo/gmp/fib.go
@@ -0,0 +1,43 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Compute Fibonacci numbers with two goroutines
+// that pass integers back and forth. No actual
+// concurrency, just threads and synchronization
+// and foreign code on multiple pthreads.
+
+package main
+
+import (
+ big "gmp"
+ "runtime"
+)
+
+func fibber(c chan *big.Int, out chan string, n int64) {
+ // Keep the fibbers in dedicated operating system
+ // threads, so that this program tests coordination
+ // between pthreads and not just goroutines.
+ runtime.LockOSThread()
+
+ i := big.NewInt(n)
+ if n == 0 {
+ c <- i
+ }
+ for {
+ j := <-c
+ out <- j.String()
+ i.Add(i, j)
+ c <- i
+ }
+}
+
+func main() {
+ c := make(chan *big.Int)
+ out := make(chan string)
+ go fibber(c, out, 0)
+ go fibber(c, out, 1)
+ for i := 0; i < 200; i++ {
+ println(<-out)
+ }
+}
diff --git a/misc/cgo/gmp/gmp.go b/misc/cgo/gmp/gmp.go
new file mode 100644
index 000000000..3dbc022ce
--- /dev/null
+++ b/misc/cgo/gmp/gmp.go
@@ -0,0 +1,368 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+/*
+An example of wrapping a C library in Go. This is the GNU
+multiprecision library gmp's integer type mpz_t wrapped to look like
+the Go package big's integer type Int.
+
+This is a syntactically valid Go program—it can be parsed with the Go
+parser and processed by godoc—but it is not compiled directly by 6g.
+Instead, a separate tool, cgo, processes it to produce three output
+files. The first two, 6g.go and 6c.c, are a Go source file for 6g and
+a C source file for 6c; both compile as part of the named package
+(gmp, in this example). The third, gcc.c, is a C source file for gcc;
+it compiles into a shared object (.so) that is dynamically linked into
+any 6.out that imports the first two files.
+
+The stanza
+
+ // #include <gmp.h>
+ import "C"
+
+is a signal to cgo. The doc comment on the import of "C" provides
+additional context for the C file. Here it is just a single #include
+but it could contain arbitrary C definitions to be imported and used.
+
+Cgo recognizes any use of a qualified identifier C.xxx and uses gcc to
+find the definition of xxx. If xxx is a type, cgo replaces C.xxx with
+a Go translation. C arithmetic types translate to precisely-sized Go
+arithmetic types. A C struct translates to a Go struct, field by
+field; unrepresentable fields are replaced with opaque byte arrays. A
+C union translates into a struct containing the first union member and
+perhaps additional padding. C arrays become Go arrays. C pointers
+become Go pointers. C function pointers become Go's uintptr.
+C void pointer's become Go's unsafe.Pointer.
+
+For example, mpz_t is defined in <gmp.h> as:
+
+ typedef unsigned long int mp_limb_t;
+
+ typedef struct
+ {
+ int _mp_alloc;
+ int _mp_size;
+ mp_limb_t *_mp_d;
+ } __mpz_struct;
+
+ typedef __mpz_struct mpz_t[1];
+
+Cgo generates:
+
+ type _C_int int32
+ type _C_mp_limb_t uint64
+ type _C___mpz_struct struct {
+ _mp_alloc _C_int;
+ _mp_size _C_int;
+ _mp_d *_C_mp_limb_t;
+ }
+ type _C_mpz_t [1]_C___mpz_struct
+
+and then replaces each occurrence of a type C.xxx with _C_xxx.
+
+If xxx is data, cgo arranges for C.xxx to refer to the C variable,
+with the type translated as described above. To do this, cgo must
+introduce a Go variable that points at the C variable (the linker can
+be told to initialize this pointer). For example, if the gmp library
+provided
+
+ mpz_t zero;
+
+then cgo would rewrite a reference to C.zero by introducing
+
+ var _C_zero *C.mpz_t
+
+and then replacing all instances of C.zero with (*_C_zero).
+
+Cgo's most interesting translation is for functions. If xxx is a C
+function, then cgo rewrites C.xxx into a new function _C_xxx that
+calls the C xxx in a standard pthread. The new function translates
+its arguments, calls xxx, and translates the return value.
+
+Translation of parameters and the return value follows the type
+translation above except that arrays passed as parameters translate
+explicitly in Go to pointers to arrays, as they do (implicitly) in C.
+
+Garbage collection is the big problem. It is fine for the Go world to
+have pointers into the C world and to free those pointers when they
+are no longer needed. To help, the Go code can define Go objects
+holding the C pointers and use runtime.SetFinalizer on those Go objects.
+
+It is much more difficult for the C world to have pointers into the Go
+world, because the Go garbage collector is unaware of the memory
+allocated by C. The most important consideration is not to
+constrain future implementations, so the rule is that Go code can
+hand a Go pointer to C code but must separately arrange for
+Go to hang on to a reference to the pointer until C is done with it.
+*/
+package gmp
+
+// #include <gmp.h>
+// #include <stdlib.h>
+import "C"
+
+import (
+ "os"
+ "unsafe"
+)
+
+/*
+ * one of a kind
+ */
+
+// An Int represents a signed multi-precision integer.
+// The zero value for an Int represents the value 0.
+type Int struct {
+ i C.mpz_t
+ init bool
+}
+
+// NewInt returns a new Int initialized to x.
+func NewInt(x int64) *Int { return new(Int).SetInt64(x) }
+
+// Int promises that the zero value is a 0, but in gmp
+// the zero value is a crash. To bridge the gap, the
+// init bool says whether this is a valid gmp value.
+// doinit initializes z.i if it needs it. This is not inherent
+// to FFI, just a mismatch between Go's convention of
+// making zero values useful and gmp's decision not to.
+func (z *Int) doinit() {
+ if z.init {
+ return
+ }
+ z.init = true
+ C.mpz_init(&z.i[0])
+}
+
+// Bytes returns z's representation as a big-endian byte array.
+func (z *Int) Bytes() []byte {
+ b := make([]byte, (z.Len()+7)/8)
+ n := C.size_t(len(b))
+ C.mpz_export(unsafe.Pointer(&b[0]), &n, 1, 1, 1, 0, &z.i[0])
+ return b[0:n]
+}
+
+// Len returns the length of z in bits. 0 is considered to have length 1.
+func (z *Int) Len() int {
+ z.doinit()
+ return int(C.mpz_sizeinbase(&z.i[0], 2))
+}
+
+// Set sets z = x and returns z.
+func (z *Int) Set(x *Int) *Int {
+ z.doinit()
+ C.mpz_set(&z.i[0], &x.i[0])
+ return z
+}
+
+// SetBytes interprets b as the bytes of a big-endian integer
+// and sets z to that value.
+func (z *Int) SetBytes(b []byte) *Int {
+ z.doinit()
+ if len(b) == 0 {
+ z.SetInt64(0)
+ } else {
+ C.mpz_import(&z.i[0], C.size_t(len(b)), 1, 1, 1, 0, unsafe.Pointer(&b[0]))
+ }
+ return z
+}
+
+// SetInt64 sets z = x and returns z.
+func (z *Int) SetInt64(x int64) *Int {
+ z.doinit()
+ // TODO(rsc): more work on 32-bit platforms
+ C.mpz_set_si(&z.i[0], C.long(x))
+ return z
+}
+
+// SetString interprets s as a number in the given base
+// and sets z to that value. The base must be in the range [2,36].
+// SetString returns an error if s cannot be parsed or the base is invalid.
+func (z *Int) SetString(s string, base int) os.Error {
+ z.doinit()
+ if base < 2 || base > 36 {
+ return os.EINVAL
+ }
+ p := C.CString(s)
+ defer C.free(unsafe.Pointer(p))
+ if C.mpz_set_str(&z.i[0], p, C.int(base)) < 0 {
+ return os.EINVAL
+ }
+ return nil
+}
+
+// String returns the decimal representation of z.
+func (z *Int) String() string {
+ if z == nil {
+ return "nil"
+ }
+ z.doinit()
+ p := C.mpz_get_str(nil, 10, &z.i[0])
+ s := C.GoString(p)
+ C.free(unsafe.Pointer(p))
+ return s
+}
+
+func (z *Int) destroy() {
+ if z.init {
+ C.mpz_clear(&z.i[0])
+ }
+ z.init = false
+}
+
+/*
+ * arithmetic
+ */
+
+// Add sets z = x + y and returns z.
+func (z *Int) Add(x, y *Int) *Int {
+ x.doinit()
+ y.doinit()
+ z.doinit()
+ C.mpz_add(&z.i[0], &x.i[0], &y.i[0])
+ return z
+}
+
+// Sub sets z = x - y and returns z.
+func (z *Int) Sub(x, y *Int) *Int {
+ x.doinit()
+ y.doinit()
+ z.doinit()
+ C.mpz_sub(&z.i[0], &x.i[0], &y.i[0])
+ return z
+}
+
+// Mul sets z = x * y and returns z.
+func (z *Int) Mul(x, y *Int) *Int {
+ x.doinit()
+ y.doinit()
+ z.doinit()
+ C.mpz_mul(&z.i[0], &x.i[0], &y.i[0])
+ return z
+}
+
+// Div sets z = x / y, rounding toward zero, and returns z.
+func (z *Int) Div(x, y *Int) *Int {
+ x.doinit()
+ y.doinit()
+ z.doinit()
+ C.mpz_tdiv_q(&z.i[0], &x.i[0], &y.i[0])
+ return z
+}
+
+// Mod sets z = x % y and returns z.
+// Like the result of the Go % operator, z has the same sign as x.
+func (z *Int) Mod(x, y *Int) *Int {
+ x.doinit()
+ y.doinit()
+ z.doinit()
+ C.mpz_tdiv_r(&z.i[0], &x.i[0], &y.i[0])
+ return z
+}
+
+// Lsh sets z = x << s and returns z.
+func (z *Int) Lsh(x *Int, s uint) *Int {
+ x.doinit()
+ z.doinit()
+ C.mpz_mul_2exp(&z.i[0], &x.i[0], C.mp_bitcnt_t(s))
+ return z
+}
+
+// Rsh sets z = x >> s and returns z.
+func (z *Int) Rsh(x *Int, s uint) *Int {
+ x.doinit()
+ z.doinit()
+ C.mpz_div_2exp(&z.i[0], &x.i[0], C.mp_bitcnt_t(s))
+ return z
+}
+
+// Exp sets z = x^y % m and returns z.
+// If m == nil, Exp sets z = x^y.
+func (z *Int) Exp(x, y, m *Int) *Int {
+ m.doinit()
+ x.doinit()
+ y.doinit()
+ z.doinit()
+ if m == nil {
+ C.mpz_pow_ui(&z.i[0], &x.i[0], C.mpz_get_ui(&y.i[0]))
+ } else {
+ C.mpz_powm(&z.i[0], &x.i[0], &y.i[0], &m.i[0])
+ }
+ return z
+}
+
+func (z *Int) Int64() int64 {
+ if !z.init {
+ return 0
+ }
+ return int64(C.mpz_get_si(&z.i[0]))
+}
+
+// Neg sets z = -x and returns z.
+func (z *Int) Neg(x *Int) *Int {
+ x.doinit()
+ z.doinit()
+ C.mpz_neg(&z.i[0], &x.i[0])
+ return z
+}
+
+// Abs sets z to the absolute value of x and returns z.
+func (z *Int) Abs(x *Int) *Int {
+ x.doinit()
+ z.doinit()
+ C.mpz_abs(&z.i[0], &x.i[0])
+ return z
+}
+
+/*
+ * functions without a clear receiver
+ */
+
+// CmpInt compares x and y. The result is
+//
+// -1 if x < y
+// 0 if x == y
+// +1 if x > y
+//
+func CmpInt(x, y *Int) int {
+ x.doinit()
+ y.doinit()
+ switch cmp := C.mpz_cmp(&x.i[0], &y.i[0]); {
+ case cmp < 0:
+ return -1
+ case cmp == 0:
+ return 0
+ }
+ return +1
+}
+
+// DivModInt sets q = x / y and r = x % y.
+func DivModInt(q, r, x, y *Int) {
+ q.doinit()
+ r.doinit()
+ x.doinit()
+ y.doinit()
+ C.mpz_tdiv_qr(&q.i[0], &r.i[0], &x.i[0], &y.i[0])
+}
+
+// GcdInt sets d to the greatest common divisor of a and b,
+// which must be positive numbers.
+// If x and y are not nil, GcdInt sets x and y such that d = a*x + b*y.
+// If either a or b is not positive, GcdInt sets d = x = y = 0.
+func GcdInt(d, x, y, a, b *Int) {
+ d.doinit()
+ x.doinit()
+ y.doinit()
+ a.doinit()
+ b.doinit()
+ C.mpz_gcdext(&d.i[0], &x.i[0], &y.i[0], &a.i[0], &b.i[0])
+}
+
+// ProbablyPrime performs n Miller-Rabin tests to check whether z is prime.
+// If it returns true, z is prime with probability 1 - 1/4^n.
+// If it returns false, z is not prime.
+func (z *Int) ProbablyPrime(n int) bool {
+ z.doinit()
+ return int(C.mpz_probab_prime_p(&z.i[0], C.int(n))) > 0
+}
diff --git a/misc/cgo/gmp/pi.go b/misc/cgo/gmp/pi.go
new file mode 100644
index 000000000..45f61abbd
--- /dev/null
+++ b/misc/cgo/gmp/pi.go
@@ -0,0 +1,104 @@
+/*
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ * Neither the name of "The Computer Language Benchmarks Game" nor the
+ name of "The Computer Language Shootout Benchmarks" nor the names of
+ its contributors may be used to endorse or promote products derived
+ from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
+*/
+
+/* The Computer Language Benchmarks Game
+ * http://shootout.alioth.debian.org/
+ *
+ * contributed by The Go Authors.
+ * based on pidigits.c (by Paolo Bonzini & Sean Bartlett,
+ * modified by Michael Mellor)
+ */
+
+package main
+
+import (
+ big "gmp"
+ "fmt"
+ "runtime"
+)
+
+var (
+ tmp1 = big.NewInt(0)
+ tmp2 = big.NewInt(0)
+ numer = big.NewInt(1)
+ accum = big.NewInt(0)
+ denom = big.NewInt(1)
+ ten = big.NewInt(10)
+)
+
+func extractDigit() int64 {
+ if big.CmpInt(numer, accum) > 0 {
+ return -1
+ }
+ tmp1.Lsh(numer, 1).Add(tmp1, numer).Add(tmp1, accum)
+ big.DivModInt(tmp1, tmp2, tmp1, denom)
+ tmp2.Add(tmp2, numer)
+ if big.CmpInt(tmp2, denom) >= 0 {
+ return -1
+ }
+ return tmp1.Int64()
+}
+
+func nextTerm(k int64) {
+ y2 := k*2 + 1
+ accum.Add(accum, tmp1.Lsh(numer, 1))
+ accum.Mul(accum, tmp1.SetInt64(y2))
+ numer.Mul(numer, tmp1.SetInt64(k))
+ denom.Mul(denom, tmp1.SetInt64(y2))
+}
+
+func eliminateDigit(d int64) {
+ accum.Sub(accum, tmp1.Mul(denom, tmp1.SetInt64(d)))
+ accum.Mul(accum, ten)
+ numer.Mul(numer, ten)
+}
+
+func main() {
+ i := 0
+ k := int64(0)
+ for {
+ d := int64(-1)
+ for d < 0 {
+ k++
+ nextTerm(k)
+ d = extractDigit()
+ }
+ eliminateDigit(d)
+ fmt.Printf("%c", d+'0')
+
+ if i++; i%50 == 0 {
+ fmt.Printf("\n")
+ if i >= 1000 {
+ break
+ }
+ }
+ }
+
+ fmt.Printf("\n%d calls; bit sizes: %d %d %d\n", runtime.Cgocalls(), numer.Len(), accum.Len(), denom.Len())
+}
diff --git a/misc/cgo/life/Makefile b/misc/cgo/life/Makefile
new file mode 100644
index 000000000..5a10380ed
--- /dev/null
+++ b/misc/cgo/life/Makefile
@@ -0,0 +1,21 @@
+# Copyright 2010 The Go Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+include ../../../src/Make.inc
+
+TARG=life
+
+CGOFILES=\
+ life.go\
+
+CGO_OFILES=\
+ c-life.o\
+
+CLEANFILES+=life
+
+include ../../../src/Make.pkg
+
+life: install main.go
+ $(GC) main.go
+ $(LD) -o $@ main.$O
diff --git a/misc/cgo/life/c-life.c b/misc/cgo/life/c-life.c
new file mode 100644
index 000000000..657245595
--- /dev/null
+++ b/misc/cgo/life/c-life.c
@@ -0,0 +1,56 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include <assert.h>
+#include "life.h"
+#include "_cgo_export.h"
+
+const int MYCONST = 0;
+
+// Do the actual manipulation of the life board in C. This could be
+// done easily in Go, we are just using C for demonstration
+// purposes.
+void
+Step(int x, int y, int *a, int *n)
+{
+ struct GoStart_return r;
+
+ // Use Go to start 4 goroutines each of which handles 1/4 of the
+ // board.
+ r = GoStart(0, x, y, 0, x / 2, 0, y / 2, a, n);
+ assert(r.r0 == 0 && r.r1 == 100); // test multiple returns
+ r = GoStart(1, x, y, x / 2, x, 0, y / 2, a, n);
+ assert(r.r0 == 1 && r.r1 == 101); // test multiple returns
+ GoStart(2, x, y, 0, x / 2, y / 2, y, a, n);
+ GoStart(3, x, y, x / 2, x, y / 2, y, a, n);
+ GoWait(0);
+ GoWait(1);
+ GoWait(2);
+ GoWait(3);
+}
+
+// The actual computation. This is called in parallel.
+void
+DoStep(int xdim, int ydim, int xstart, int xend, int ystart, int yend, int *a, int *n)
+{
+ int x, y, c, i, j;
+
+ for(x = xstart; x < xend; x++) {
+ for(y = ystart; y < yend; y++) {
+ c = 0;
+ for(i = -1; i <= 1; i++) {
+ for(j = -1; j <= 1; j++) {
+ if(x+i >= 0 && x+i < xdim &&
+ y+j >= 0 && y+j < ydim &&
+ (i != 0 || j != 0))
+ c += a[(x+i)*xdim + (y+j)] != 0;
+ }
+ }
+ if(c == 3 || (c == 2 && a[x*xdim + y] != 0))
+ n[x*xdim + y] = 1;
+ else
+ n[x*xdim + y] = 0;
+ }
+ }
+}
diff --git a/misc/cgo/life/golden.out b/misc/cgo/life/golden.out
new file mode 100644
index 000000000..539d2106d
--- /dev/null
+++ b/misc/cgo/life/golden.out
@@ -0,0 +1,17 @@
+* life
+
+
+ XXX XXX
+
+
+
+
+
+
+
+ XXX XXX
+
+
+
+
+
diff --git a/misc/cgo/life/life.go b/misc/cgo/life/life.go
new file mode 100644
index 000000000..ec000ce3a
--- /dev/null
+++ b/misc/cgo/life/life.go
@@ -0,0 +1,39 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package life
+
+// #include "life.h"
+import "C"
+
+import "unsafe"
+
+func Run(gen, x, y int, a []int) {
+ n := make([]int, x*y)
+ for i := 0; i < gen; i++ {
+ C.Step(C.int(x), C.int(y), (*C.int)(unsafe.Pointer(&a[0])), (*C.int)(unsafe.Pointer(&n[0])))
+ copy(a, n)
+ }
+}
+
+// Keep the channels visible from Go.
+var chans [4]chan bool
+
+//export GoStart
+// Double return value is just for testing.
+func GoStart(i, xdim, ydim, xstart, xend, ystart, yend C.int, a *C.int, n *C.int) (int, int) {
+ c := make(chan bool, int(C.MYCONST))
+ go func() {
+ C.DoStep(xdim, ydim, xstart, xend, ystart, yend, a, n)
+ c <- true
+ }()
+ chans[i] = c
+ return int(i), int(i + 100)
+}
+
+//export GoWait
+func GoWait(i C.int) {
+ <-chans[i]
+ chans[i] = nil
+}
diff --git a/misc/cgo/life/life.h b/misc/cgo/life/life.h
new file mode 100644
index 000000000..b2011b25f
--- /dev/null
+++ b/misc/cgo/life/life.h
@@ -0,0 +1,7 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+extern void Step(int, int, int *, int *);
+extern void DoStep(int, int, int, int, int, int, int *, int *);
+extern const int MYCONST;
diff --git a/misc/cgo/life/main.go b/misc/cgo/life/main.go
new file mode 100644
index 000000000..9cfed434b
--- /dev/null
+++ b/misc/cgo/life/main.go
@@ -0,0 +1,44 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Run the game of life in C using Go for parallelization.
+
+package main
+
+import (
+ "flag"
+ "fmt"
+ "life"
+)
+
+const MAXDIM = 100
+
+var dim = flag.Int("dim", 16, "board dimensions")
+var gen = flag.Int("gen", 10, "generations")
+
+func main() {
+ flag.Parse()
+
+ var a [MAXDIM * MAXDIM]int
+ for i := 2; i < *dim; i += 8 {
+ for j := 2; j < *dim-3; j += 8 {
+ for y := 0; y < 3; y++ {
+ a[i**dim+j+y] = 1
+ }
+ }
+ }
+
+ life.Run(*gen, *dim, *dim, a[:])
+
+ for i := 0; i < *dim; i++ {
+ for j := 0; j < *dim; j++ {
+ if a[i**dim+j] == 0 {
+ fmt.Print(" ")
+ } else {
+ fmt.Print("X")
+ }
+ }
+ fmt.Print("\n")
+ }
+}
diff --git a/misc/cgo/life/test.bash b/misc/cgo/life/test.bash
new file mode 100755
index 000000000..5c5fba1a9
--- /dev/null
+++ b/misc/cgo/life/test.bash
@@ -0,0 +1,11 @@
+#!/bin/sh
+# Copyright 2010 The Go Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+set -e
+gomake life
+echo '*' life >run.out
+./life >>run.out
+diff run.out golden.out
+gomake clean
diff --git a/misc/cgo/stdio/Makefile b/misc/cgo/stdio/Makefile
new file mode 100644
index 000000000..3f7a4c01c
--- /dev/null
+++ b/misc/cgo/stdio/Makefile
@@ -0,0 +1,17 @@
+# Copyright 2009 The Go Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+include ../../../src/Make.inc
+
+TARG=stdio
+CGOFILES=\
+ file.go\
+
+CLEANFILES+=hello fib chain run.out
+
+include ../../../src/Make.pkg
+
+%: install %.go
+ $(GC) $*.go
+ $(LD) -o $@ $*.$O
diff --git a/misc/cgo/stdio/chain.go b/misc/cgo/stdio/chain.go
new file mode 100644
index 000000000..c188b2dd9
--- /dev/null
+++ b/misc/cgo/stdio/chain.go
@@ -0,0 +1,43 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Pass numbers along a chain of threads.
+
+package main
+
+import (
+ "runtime"
+ "stdio"
+ "strconv"
+)
+
+const N = 10
+const R = 5
+
+func link(left chan<- int, right <-chan int) {
+ // Keep the links in dedicated operating system
+ // threads, so that this program tests coordination
+ // between pthreads and not just goroutines.
+ runtime.LockOSThread()
+ for {
+ v := <-right
+ stdio.Stdout.WriteString(strconv.Itoa(v) + "\n")
+ left <- 1 + v
+ }
+}
+
+func main() {
+ leftmost := make(chan int)
+ var left chan int
+ right := leftmost
+ for i := 0; i < N; i++ {
+ left, right = right, make(chan int)
+ go link(left, right)
+ }
+ for i := 0; i < R; i++ {
+ right <- 0
+ x := <-leftmost
+ stdio.Stdout.WriteString(strconv.Itoa(x) + "\n")
+ }
+}
diff --git a/misc/cgo/stdio/fib.go b/misc/cgo/stdio/fib.go
new file mode 100644
index 000000000..c02e31fd8
--- /dev/null
+++ b/misc/cgo/stdio/fib.go
@@ -0,0 +1,47 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Compute Fibonacci numbers with two goroutines
+// that pass integers back and forth. No actual
+// concurrency, just threads and synchronization
+// and foreign code on multiple pthreads.
+
+package main
+
+import (
+ "runtime"
+ "stdio"
+ "strconv"
+)
+
+func fibber(c, out chan int64, i int64) {
+ // Keep the fibbers in dedicated operating system
+ // threads, so that this program tests coordination
+ // between pthreads and not just goroutines.
+ runtime.LockOSThread()
+
+ if i == 0 {
+ c <- i
+ }
+ for {
+ j := <-c
+ stdio.Stdout.WriteString(strconv.Itoa64(j) + "\n")
+ out <- j
+ <-out
+ i += j
+ c <- i
+ }
+}
+
+func main() {
+ c := make(chan int64)
+ out := make(chan int64)
+ go fibber(c, out, 0)
+ go fibber(c, out, 1)
+ <-out
+ for i := 0; i < 90; i++ {
+ out <- 1
+ <-out
+ }
+}
diff --git a/misc/cgo/stdio/file.go b/misc/cgo/stdio/file.go
new file mode 100644
index 000000000..ab1e88436
--- /dev/null
+++ b/misc/cgo/stdio/file.go
@@ -0,0 +1,45 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+/*
+A trivial example of wrapping a C library in Go.
+For a more complex example and explanation,
+see ../gmp/gmp.go.
+*/
+
+package stdio
+
+/*
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <errno.h>
+
+char* greeting = "hello, world";
+*/
+import "C"
+import "unsafe"
+
+type File C.FILE
+
+var Stdout = (*File)(C.stdout)
+var Stderr = (*File)(C.stderr)
+
+// Test reference to library symbol.
+// Stdout and stderr are too special to be a reliable test.
+var myerr = C.sys_errlist
+
+func (f *File) WriteString(s string) {
+ p := C.CString(s)
+ C.fputs(p, (*C.FILE)(f))
+ C.free(unsafe.Pointer(p))
+ f.Flush()
+}
+
+func (f *File) Flush() {
+ C.fflush((*C.FILE)(f))
+}
+
+var Greeting = C.GoString(C.greeting)
+var Gbytes = C.GoBytes(unsafe.Pointer(C.greeting), C.int(len(Greeting)))
diff --git a/misc/cgo/stdio/golden.out b/misc/cgo/stdio/golden.out
new file mode 100644
index 000000000..c0e496547
--- /dev/null
+++ b/misc/cgo/stdio/golden.out
@@ -0,0 +1,150 @@
+* hello
+hello, world
+* fib
+0
+1
+1
+2
+3
+5
+8
+13
+21
+34
+55
+89
+144
+233
+377
+610
+987
+1597
+2584
+4181
+6765
+10946
+17711
+28657
+46368
+75025
+121393
+196418
+317811
+514229
+832040
+1346269
+2178309
+3524578
+5702887
+9227465
+14930352
+24157817
+39088169
+63245986
+102334155
+165580141
+267914296
+433494437
+701408733
+1134903170
+1836311903
+2971215073
+4807526976
+7778742049
+12586269025
+20365011074
+32951280099
+53316291173
+86267571272
+139583862445
+225851433717
+365435296162
+591286729879
+956722026041
+1548008755920
+2504730781961
+4052739537881
+6557470319842
+10610209857723
+17167680177565
+27777890035288
+44945570212853
+72723460248141
+117669030460994
+190392490709135
+308061521170129
+498454011879264
+806515533049393
+1304969544928657
+2111485077978050
+3416454622906707
+5527939700884757
+8944394323791464
+14472334024676221
+23416728348467685
+37889062373143906
+61305790721611591
+99194853094755497
+160500643816367088
+259695496911122585
+420196140727489673
+679891637638612258
+1100087778366101931
+1779979416004714189
+2880067194370816120
+* chain
+0
+1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+0
+1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+0
+1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+0
+1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+0
+1
+2
+3
+4
+5
+6
+7
+8
+9
+10
diff --git a/misc/cgo/stdio/hello.go b/misc/cgo/stdio/hello.go
new file mode 100644
index 000000000..58fc6d574
--- /dev/null
+++ b/misc/cgo/stdio/hello.go
@@ -0,0 +1,11 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+import "stdio"
+
+func main() {
+ stdio.Stdout.WriteString(stdio.Greeting + "\n")
+}
diff --git a/misc/cgo/stdio/test.bash b/misc/cgo/stdio/test.bash
new file mode 100755
index 000000000..82e3f7b45
--- /dev/null
+++ b/misc/cgo/stdio/test.bash
@@ -0,0 +1,15 @@
+#!/bin/sh
+# Copyright 2009 The Go Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+set -e
+gomake hello fib chain
+echo '*' hello >run.out
+./hello >>run.out
+echo '*' fib >>run.out
+./fib >>run.out
+echo '*' chain >>run.out
+./chain >>run.out
+diff run.out golden.out
+gomake clean
diff --git a/misc/cgo/test/Makefile b/misc/cgo/test/Makefile
new file mode 100644
index 000000000..d4309be3c
--- /dev/null
+++ b/misc/cgo/test/Makefile
@@ -0,0 +1,26 @@
+# Copyright 2011 The Go Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+include ../../../src/Make.inc
+
+TARG=runtime/cgotest
+
+CGOFILES=\
+ align.go\
+ basic.go\
+ callback.go\
+ env.go\
+ exports.go\
+ issue1222.go\
+ issue1328.go\
+ issue1560.go\
+ duplicate_symbol.go\
+
+CGO_OFILES=\
+ callback_c.o\
+
+OFILES=\
+ runtime.$O\
+
+include ../../../src/Make.pkg
diff --git a/misc/cgo/test/align.go b/misc/cgo/test/align.go
new file mode 100644
index 000000000..07ab9ef50
--- /dev/null
+++ b/misc/cgo/test/align.go
@@ -0,0 +1,72 @@
+package cgotest
+
+/*
+#include <stdio.h>
+
+typedef unsigned char Uint8;
+typedef unsigned short Uint16;
+
+typedef enum {
+ MOD1 = 0x0000,
+ MODX = 0x8000
+} SDLMod;
+
+typedef enum {
+ A = 1,
+ B = 322,
+ SDLK_LAST
+} SDLKey;
+
+typedef struct SDL_keysym {
+ Uint8 scancode;
+ SDLKey sym;
+ SDLMod mod;
+ Uint16 unicode;
+} SDL_keysym;
+
+typedef struct SDL_KeyboardEvent {
+ Uint8 typ;
+ Uint8 which;
+ Uint8 state;
+ SDL_keysym keysym;
+} SDL_KeyboardEvent;
+
+void makeEvent(SDL_KeyboardEvent *event) {
+ unsigned char *p;
+ int i;
+
+ p = (unsigned char*)event;
+ for (i=0; i<sizeof *event; i++) {
+ p[i] = i;
+ }
+}
+
+int same(SDL_KeyboardEvent* e, Uint8 typ, Uint8 which, Uint8 state, Uint8 scan, SDLKey sym, SDLMod mod, Uint16 uni) {
+ return e->typ == typ && e->which == which && e->state == state && e->keysym.scancode == scan && e->keysym.sym == sym && e->keysym.mod == mod && e->keysym.unicode == uni;
+}
+
+void cTest(SDL_KeyboardEvent *event) {
+ printf("C: %#x %#x %#x %#x %#x %#x %#x\n", event->typ, event->which, event->state,
+ event->keysym.scancode, event->keysym.sym, event->keysym.mod, event->keysym.unicode);
+ fflush(stdout);
+}
+
+*/
+import "C"
+
+import (
+ "testing"
+)
+
+func testAlign(t *testing.T) {
+ var evt C.SDL_KeyboardEvent
+ C.makeEvent(&evt)
+ if C.same(&evt, evt.typ, evt.which, evt.state, evt.keysym.scancode, evt.keysym.sym, evt.keysym.mod, evt.keysym.unicode) == 0 {
+ t.Error("*** bad alignment")
+ C.cTest(&evt)
+ t.Errorf("Go: %#x %#x %#x %#x %#x %#x %#x\n",
+ evt.typ, evt.which, evt.state, evt.keysym.scancode,
+ evt.keysym.sym, evt.keysym.mod, evt.keysym.unicode)
+ t.Error(evt)
+ }
+}
diff --git a/misc/cgo/test/basic.go b/misc/cgo/test/basic.go
new file mode 100644
index 000000000..b9d0953bd
--- /dev/null
+++ b/misc/cgo/test/basic.go
@@ -0,0 +1,134 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Basic test cases for cgo.
+
+package cgotest
+
+/*
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <errno.h>
+
+#define SHIFT(x, y) ((x)<<(y))
+#define KILO SHIFT(1, 10)
+
+enum E {
+ Enum1 = 1,
+ Enum2 = 2,
+};
+
+typedef unsigned char uuid_t[20];
+
+void uuid_generate(uuid_t x) {
+ x[0] = 0;
+}
+
+struct S {
+ int x;
+};
+
+extern enum E myConstFunc(struct S* const ctx, int const id, struct S **const filter);
+
+enum E myConstFunc(struct S *const ctx, int const id, struct S **const filter) { return 0; }
+
+// issue 1222
+typedef union {
+ long align;
+} xxpthread_mutex_t;
+
+struct ibv_async_event {
+ union {
+ int x;
+ } element;
+};
+
+struct ibv_context {
+ xxpthread_mutex_t mutex;
+};
+*/
+import "C"
+import (
+ "os"
+ "testing"
+ "unsafe"
+)
+
+const EINVAL = C.EINVAL /* test #define */
+
+var KILO = C.KILO
+
+func uuidgen() {
+ var uuid C.uuid_t
+ C.uuid_generate(&uuid[0])
+}
+
+func Size(name string) (int64, os.Error) {
+ var st C.struct_stat
+ p := C.CString(name)
+ _, err := C.stat(p, &st)
+ C.free(unsafe.Pointer(p))
+ if err != nil {
+ return 0, err
+ }
+ return int64(C.ulong(st.st_size)), nil
+}
+
+func Strtol(s string, base int) (int, os.Error) {
+ p := C.CString(s)
+ n, err := C.strtol(p, nil, C.int(base))
+ C.free(unsafe.Pointer(p))
+ return int(n), err
+}
+
+func Atol(s string) int {
+ p := C.CString(s)
+ n := C.atol(p)
+ C.free(unsafe.Pointer(p))
+ return int(n)
+}
+
+func testConst(t *testing.T) {
+ C.myConstFunc(nil, 0, nil)
+}
+
+func testEnum(t *testing.T) {
+ if C.Enum1 != 1 || C.Enum2 != 2 {
+ t.Error("bad enum", C.Enum1, C.Enum2)
+ }
+}
+
+func testAtol(t *testing.T) {
+ l := Atol("123")
+ if l != 123 {
+ t.Error("Atol 123: ", l)
+ }
+}
+
+func testErrno(t *testing.T) {
+ n, err := Strtol("asdf", 123)
+ if n != 0 || err != os.EINVAL {
+ t.Error("Strtol: ", n, err)
+ }
+}
+
+func testMultipleAssign(t *testing.T) {
+ p := C.CString("234")
+ n, m := C.strtol(p, nil, 345), C.strtol(p, nil, 10)
+ if n != 0 || m != 234 {
+ t.Fatal("Strtol x2: ", n, m)
+ }
+ C.free(unsafe.Pointer(p))
+}
+
+var (
+ uint = (C.uint)(0)
+ ulong C.ulong
+ char C.char
+)
+
+type Context struct {
+ ctx *C.struct_ibv_context
+}
diff --git a/misc/cgo/test/callback.go b/misc/cgo/test/callback.go
new file mode 100644
index 000000000..3edee9758
--- /dev/null
+++ b/misc/cgo/test/callback.go
@@ -0,0 +1,136 @@
+package cgotest
+
+/*
+void callback(void *f);
+void callGoFoo(void) {
+ extern void goFoo(void);
+ goFoo();
+}
+*/
+import "C"
+
+import (
+ "runtime"
+ "testing"
+ "unsafe"
+)
+
+// nestedCall calls into C, back into Go, and finally to f.
+func nestedCall(f func()) {
+ // NOTE: Depends on representation of f.
+ // callback(x) calls goCallback(x)
+ C.callback(*(*unsafe.Pointer)(unsafe.Pointer(&f)))
+}
+
+//export goCallback
+func goCallback(p unsafe.Pointer) {
+ (*(*func())(unsafe.Pointer(&p)))()
+}
+
+func testCallback(t *testing.T) {
+ var x = false
+ nestedCall(func() { x = true })
+ if !x {
+ t.Fatal("nestedCall did not call func")
+ }
+}
+
+func testCallbackGC(t *testing.T) {
+ nestedCall(runtime.GC)
+}
+
+func lockedOSThread() bool // in runtime.c
+
+func testCallbackPanic(t *testing.T) {
+ // Make sure panic during callback unwinds properly.
+ if lockedOSThread() {
+ t.Fatal("locked OS thread on entry to TestCallbackPanic")
+ }
+ defer func() {
+ s := recover()
+ if s == nil {
+ t.Fatal("did not panic")
+ }
+ if s.(string) != "callback panic" {
+ t.Fatal("wrong panic:", s)
+ }
+ if lockedOSThread() {
+ t.Fatal("locked OS thread on exit from TestCallbackPanic")
+ }
+ }()
+ nestedCall(func() { panic("callback panic") })
+ panic("nestedCall returned")
+}
+
+func testCallbackPanicLoop(t *testing.T) {
+ // Make sure we don't blow out m->g0 stack.
+ for i := 0; i < 100000; i++ {
+ TestCallbackPanic(t)
+ }
+}
+
+func testCallbackPanicLocked(t *testing.T) {
+ runtime.LockOSThread()
+ defer runtime.UnlockOSThread()
+
+ if !lockedOSThread() {
+ t.Fatal("runtime.LockOSThread didn't")
+ }
+ defer func() {
+ s := recover()
+ if s == nil {
+ t.Fatal("did not panic")
+ }
+ if s.(string) != "callback panic" {
+ t.Fatal("wrong panic:", s)
+ }
+ if !lockedOSThread() {
+ t.Fatal("lost lock on OS thread after panic")
+ }
+ }()
+ nestedCall(func() { panic("callback panic") })
+ panic("nestedCall returned")
+}
+
+// Callback with zero arguments used to make the stack misaligned,
+// which broke the garbage collector and other things.
+func testZeroArgCallback(t *testing.T) {
+ defer func() {
+ s := recover()
+ if s != nil {
+ t.Fatal("panic during callback:", s)
+ }
+ }()
+ C.callGoFoo()
+}
+
+//export goFoo
+func goFoo() {
+ x := 1
+ for i := 0; i < 10000; i++ {
+ // variadic call mallocs + writes to
+ variadic(x, x, x)
+ if x != 1 {
+ panic("bad x")
+ }
+ }
+}
+
+func variadic(x ...interface{}) {}
+
+func testBlocking(t *testing.T) {
+ c := make(chan int)
+ go func() {
+ for i := 0; i < 10; i++ {
+ c <- <-c
+ }
+ }()
+ nestedCall(func() {
+ for i := 0; i < 10; i++ {
+ c <- i
+ if j := <-c; j != i {
+ t.Errorf("out of sync %d != %d", j, i)
+ }
+ }
+ })
+}
diff --git a/misc/cgo/test/callback_c.c b/misc/cgo/test/callback_c.c
new file mode 100644
index 000000000..5983a5e11
--- /dev/null
+++ b/misc/cgo/test/callback_c.c
@@ -0,0 +1,12 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include <sys/types.h>
+#include "_cgo_export.h"
+
+void
+callback(void *f)
+{
+ goCallback(f);
+}
diff --git a/misc/cgo/test/cgo_test.go b/misc/cgo/test/cgo_test.go
new file mode 100644
index 000000000..94fba15db
--- /dev/null
+++ b/misc/cgo/test/cgo_test.go
@@ -0,0 +1,28 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package cgotest
+
+import "testing"
+
+// The actual test functions are in non-_test.go files
+// so that they can use cgo (import "C").
+// These wrappers are here for gotest to find.
+
+func TestAlign(t *testing.T) { testAlign(t) }
+func TestConst(t *testing.T) { testConst(t) }
+func TestEnum(t *testing.T) { testEnum(t) }
+func TestAtol(t *testing.T) { testAtol(t) }
+func TestErrno(t *testing.T) { testErrno(t) }
+func TestMultipleAssign(t *testing.T) { testMultipleAssign(t) }
+func TestCallback(t *testing.T) { testCallback(t) }
+func TestCallbackGC(t *testing.T) { testCallbackGC(t) }
+func TestCallbackPanic(t *testing.T) { testCallbackPanic(t) }
+func TestCallbackPanicLoop(t *testing.T) { testCallbackPanicLoop(t) }
+func TestCallbackPanicLocked(t *testing.T) { testCallbackPanicLocked(t) }
+func TestZeroArgCallback(t *testing.T) { testZeroArgCallback(t) }
+func TestBlocking(t *testing.T) { testBlocking(t) }
+func Test1328(t *testing.T) { test1328(t) }
+func TestParallelSleep(t *testing.T) { testParallelSleep(t) }
+func TestSetEnv(t *testing.T) { testSetEnv(t) }
diff --git a/misc/cgo/test/duplicate_symbol.go b/misc/cgo/test/duplicate_symbol.go
new file mode 100644
index 000000000..69600de9c
--- /dev/null
+++ b/misc/cgo/test/duplicate_symbol.go
@@ -0,0 +1,21 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// This file contains test cases for cgo.
+
+package cgotest
+
+/*
+int base_symbol = 0;
+
+#define alias_one base_symbol
+#define alias_two base_symbol
+*/
+import "C"
+
+import "fmt"
+
+func duplicateSymbols() {
+ fmt.Printf("%v %v %v\n", C.base_symbol, C.alias_one, C.alias_two)
+}
diff --git a/misc/cgo/test/env.go b/misc/cgo/test/env.go
new file mode 100644
index 000000000..1fb4e684c
--- /dev/null
+++ b/misc/cgo/test/env.go
@@ -0,0 +1,32 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package cgotest
+
+/*
+#include <stdlib.h>
+*/
+import "C"
+import (
+ "os"
+ "testing"
+ "unsafe"
+)
+
+// This is really an os package test but here for convenience.
+func testSetEnv(t *testing.T) {
+ const key = "CGO_OS_TEST_KEY"
+ const val = "CGO_OS_TEST_VALUE"
+ os.Setenv(key, val)
+ keyc := C.CString(key)
+ defer C.free(unsafe.Pointer(keyc))
+ v := C.getenv(keyc)
+ if v == (*C.char)(unsafe.Pointer(uintptr(0))) {
+ t.Fatal("getenv returned NULL")
+ }
+ vs := C.GoString(v)
+ if vs != val {
+ t.Fatalf("getenv() = %q; want %q", vs, val)
+ }
+}
diff --git a/misc/cgo/test/exports.go b/misc/cgo/test/exports.go
new file mode 100644
index 000000000..f96c60b00
--- /dev/null
+++ b/misc/cgo/test/exports.go
@@ -0,0 +1,12 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package cgotest
+
+import "C"
+
+//export ReturnIntLong
+func ReturnIntLong() (int, C.long) {
+ return 1, 2
+}
diff --git a/misc/cgo/test/issue1222.go b/misc/cgo/test/issue1222.go
new file mode 100644
index 000000000..c396a0c41
--- /dev/null
+++ b/misc/cgo/test/issue1222.go
@@ -0,0 +1,29 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// This file contains test cases for cgo.
+
+package cgotest
+
+/*
+// issue 1222
+typedef union {
+ long align;
+} xxpthread_mutex_t;
+
+struct ibv_async_event {
+ union {
+ int x;
+ } element;
+};
+
+struct ibv_context {
+ xxpthread_mutex_t mutex;
+};
+*/
+import "C"
+
+type AsyncEvent struct {
+ event C.struct_ibv_async_event
+}
diff --git a/misc/cgo/test/issue1328.go b/misc/cgo/test/issue1328.go
new file mode 100644
index 000000000..e01207dd9
--- /dev/null
+++ b/misc/cgo/test/issue1328.go
@@ -0,0 +1,30 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package cgotest
+
+import "testing"
+
+// extern void BackIntoGo(void);
+// void IntoC() { BackIntoGo(); }
+import "C"
+
+//export BackIntoGo
+func BackIntoGo() {
+ x := 1
+
+ for i := 0; i < 10000; i++ {
+ xvariadic(x)
+ if x != 1 {
+ panic("x is not 1?")
+ }
+ }
+}
+
+func xvariadic(x ...interface{}) {
+}
+
+func test1328(t *testing.T) {
+ C.IntoC()
+}
diff --git a/misc/cgo/test/issue1560.go b/misc/cgo/test/issue1560.go
new file mode 100644
index 000000000..e534cce47
--- /dev/null
+++ b/misc/cgo/test/issue1560.go
@@ -0,0 +1,46 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package cgotest
+
+/*
+#include <unistd.h>
+
+extern void BackgroundSleep(int);
+void twoSleep(int n) {
+ BackgroundSleep(n);
+ sleep(n);
+}
+*/
+import "C"
+
+import (
+ "testing"
+ "time"
+)
+
+var sleepDone = make(chan bool)
+
+func parallelSleep(n int) {
+ C.twoSleep(C.int(n))
+ <-sleepDone
+}
+
+//export BackgroundSleep
+func BackgroundSleep(n int) {
+ go func() {
+ C.sleep(C.uint(n))
+ sleepDone <- true
+ }()
+}
+
+func testParallelSleep(t *testing.T) {
+ dt := -time.Nanoseconds()
+ parallelSleep(1)
+ dt += time.Nanoseconds()
+ // bug used to run sleeps in serial, producing a 2-second delay.
+ if dt >= 1.3e9 {
+ t.Fatalf("parallel 1-second sleeps slept for %f seconds", float64(dt)/1e9)
+ }
+}
diff --git a/misc/cgo/test/runtime.c b/misc/cgo/test/runtime.c
new file mode 100644
index 000000000..e087c7622
--- /dev/null
+++ b/misc/cgo/test/runtime.c
@@ -0,0 +1,21 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Expose some runtime functions for testing.
+
+typedef char bool;
+
+bool runtime·lockedOSThread(void);
+
+static void
+FLUSH(void*)
+{
+}
+
+void
+·lockedOSThread(bool b)
+{
+ b = runtime·lockedOSThread();
+ FLUSH(&b);
+}