Imported Upstream version 1.1~hg20130323upstream/1.1_hg20130323

1 files changed, 0 insertions, 532 deletions

diff --git a/src/pkg/runtime/thread_darwin.c b/src/pkg/runtime/thread_darwin.c
deleted file mode 100644
index adb1ffe6a..000000000
--- a/src/pkg/runtime/thread_darwin.c
+++ /dev/null
@@ -1,532 +0,0 @@
-// 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 "runtime.h"
-#include "defs_GOOS_GOARCH.h"
-#include "os_GOOS.h"
-#include "stack.h"
-
-extern SigTab runtime·sigtab[];
-
-static Sigset sigset_none;
-static Sigset sigset_all = ~(Sigset)0;
-static Sigset sigset_prof = 1<<(SIGPROF-1);
-
-static void
-unimplemented(int8 *name)
-{
-	runtime·prints(name);
-	runtime·prints(" not implemented\n");
-	*(int32*)1231 = 1231;
-}
-
-int32
-runtime·semasleep(int64 ns)
-{
-	int32 v;
-
-	if(m->profilehz > 0)
-		runtime·setprof(false);
-	v = runtime·mach_semacquire(m->waitsema, ns);
-	if(m->profilehz > 0)
-		runtime·setprof(true);
-	return v;
-}
-
-void
-runtime·semawakeup(M *mp)
-{
-	runtime·mach_semrelease(mp->waitsema);
-}
-
-uintptr
-runtime·semacreate(void)
-{
-	return runtime·mach_semcreate();
-}
-
-// BSD interface for threading.
-void
-runtime·osinit(void)
-{
-	// bsdthread_register delayed until end of goenvs so that we
-	// can look at the environment first.
-
-	// Use sysctl to fetch hw.ncpu.
-	uint32 mib[2];
-	uint32 out;
-	int32 ret;
-	uintptr nout;
-
-	mib[0] = 6;
-	mib[1] = 3;
-	nout = sizeof out;
-	out = 0;
-	ret = runtime·sysctl(mib, 2, (byte*)&out, &nout, nil, 0);
-	if(ret >= 0)
-		runtime·ncpu = out;
-}
-
-void
-runtime·goenvs(void)
-{
-	runtime·goenvs_unix();
-
-	// Register our thread-creation callback (see sys_darwin_{amd64,386}.s)
-	// but only if we're not using cgo.  If we are using cgo we need
-	// to let the C pthread libary install its own thread-creation callback.
-	if(!runtime·iscgo) {
-		if(runtime·bsdthread_register() != 0) {
-			if(runtime·getenv("DYLD_INSERT_LIBRARIES"))
-				runtime·throw("runtime: bsdthread_register error (unset DYLD_INSERT_LIBRARIES)");
-			runtime·throw("runtime: bsdthread_register error");
-		}
-	}
-
-}
-
-void
-runtime·newosproc(M *mp, void *stk)
-{
-	int32 errno;
-	Sigset oset;
-
-	mp->tls[0] = mp->id;	// so 386 asm can find it
-	if(0){
-		runtime·printf("newosproc stk=%p m=%p g=%p id=%d/%d ostk=%p\n",
-			stk, mp, mp->g0, mp->id, (int32)mp->tls[0], &mp);
-	}
-
-	runtime·sigprocmask(SIG_SETMASK, &sigset_all, &oset);
-	errno = runtime·bsdthread_create(stk, mp, mp->g0, runtime·mstart);
-	runtime·sigprocmask(SIG_SETMASK, &oset, nil);
-
-	if(errno < 0) {
-		runtime·printf("runtime: failed to create new OS thread (have %d already; errno=%d)\n", runtime·mcount(), -errno);
-		runtime·throw("runtime.newosproc");
-	}
-}
-
-// Called to initialize a new m (including the bootstrap m).
-// Called on the parent thread (main thread in case of bootstrap), can allocate memory.
-void
-runtime·mpreinit(M *mp)
-{
-	mp->gsignal = runtime·malg(32*1024);	// OS X wants >=8K, Linux >=2K
-}
-
-// Called to initialize a new m (including the bootstrap m).
-// Called on the new thread, can not allocate memory.
-void
-runtime·minit(void)
-{
-	// Initialize signal handling.
-	runtime·signalstack((byte*)m->gsignal->stackguard - StackGuard, 32*1024);
-
-	runtime·sigprocmask(SIG_SETMASK, &sigset_none, nil);
-	runtime·setprof(m->profilehz > 0);
-}
-
-// Called from dropm to undo the effect of an minit.
-void
-runtime·unminit(void)
-{
-	runtime·signalstack(nil, 0);
-}
-
-// Mach IPC, to get at semaphores
-// Definitions are in /usr/include/mach on a Mac.
-
-static void
-macherror(int32 r, int8 *fn)
-{
-	runtime·printf("mach error %s: %d\n", fn, r);
-	runtime·throw("mach error");
-}
-
-enum
-{
-	DebugMach = 0
-};
-
-static MachNDR zerondr;
-
-#define MACH_MSGH_BITS(a, b) ((a) | ((b)<<8))
-
-static int32
-mach_msg(MachHeader *h,
-	int32 op,
-	uint32 send_size,
-	uint32 rcv_size,
-	uint32 rcv_name,
-	uint32 timeout,
-	uint32 notify)
-{
-	// TODO: Loop on interrupt.
-	return runtime·mach_msg_trap(h, op, send_size, rcv_size, rcv_name, timeout, notify);
-}
-
-// Mach RPC (MIG)
-
-enum
-{
-	MinMachMsg = 48,
-	Reply = 100,
-};
-
-#pragma pack on
-typedef struct CodeMsg CodeMsg;
-struct CodeMsg
-{
-	MachHeader h;
-	MachNDR NDR;
-	int32 code;
-};
-#pragma pack off
-
-static int32
-machcall(MachHeader *h, int32 maxsize, int32 rxsize)
-{
-	uint32 *p;
-	int32 i, ret, id;
-	uint32 port;
-	CodeMsg *c;
-
-	if((port = m->machport) == 0){
-		port = runtime·mach_reply_port();
-		m->machport = port;
-	}
-
-	h->msgh_bits |= MACH_MSGH_BITS(MACH_MSG_TYPE_COPY_SEND, MACH_MSG_TYPE_MAKE_SEND_ONCE);
-	h->msgh_local_port = port;
-	h->msgh_reserved = 0;
-	id = h->msgh_id;
-
-	if(DebugMach){
-		p = (uint32*)h;
-		runtime·prints("send:\t");
-		for(i=0; i<h->msgh_size/sizeof(p[0]); i++){
-			runtime·prints(" ");
-			runtime·printpointer((void*)p[i]);
-			if(i%8 == 7)
-				runtime·prints("\n\t");
-		}
-		if(i%8)
-			runtime·prints("\n");
-	}
-
-	ret = mach_msg(h, MACH_SEND_MSG|MACH_RCV_MSG,
-		h->msgh_size, maxsize, port, 0, 0);
-	if(ret != 0){
-		if(DebugMach){
-			runtime·prints("mach_msg error ");
-			runtime·printint(ret);
-			runtime·prints("\n");
-		}
-		return ret;
-	}
-
-	if(DebugMach){
-		p = (uint32*)h;
-		runtime·prints("recv:\t");
-		for(i=0; i<h->msgh_size/sizeof(p[0]); i++){
-			runtime·prints(" ");
-			runtime·printpointer((void*)p[i]);
-			if(i%8 == 7)
-				runtime·prints("\n\t");
-		}
-		if(i%8)
-			runtime·prints("\n");
-	}
-
-	if(h->msgh_id != id+Reply){
-		if(DebugMach){
-			runtime·prints("mach_msg reply id mismatch ");
-			runtime·printint(h->msgh_id);
-			runtime·prints(" != ");
-			runtime·printint(id+Reply);
-			runtime·prints("\n");
-		}
-		return -303;	// MIG_REPLY_MISMATCH
-	}
-
-	// Look for a response giving the return value.
-	// Any call can send this back with an error,
-	// and some calls only have return values so they
-	// send it back on success too.  I don't quite see how
-	// you know it's one of these and not the full response
-	// format, so just look if the message is right.
-	c = (CodeMsg*)h;
-	if(h->msgh_size == sizeof(CodeMsg)
-	&& !(h->msgh_bits & MACH_MSGH_BITS_COMPLEX)){
-		if(DebugMach){
-			runtime·prints("mig result ");
-			runtime·printint(c->code);
-			runtime·prints("\n");
-		}
-		return c->code;
-	}
-
-	if(h->msgh_size != rxsize){
-		if(DebugMach){
-			runtime·prints("mach_msg reply size mismatch ");
-			runtime·printint(h->msgh_size);
-			runtime·prints(" != ");
-			runtime·printint(rxsize);
-			runtime·prints("\n");
-		}
-		return -307;	// MIG_ARRAY_TOO_LARGE
-	}
-
-	return 0;
-}
-
-
-// Semaphores!
-
-enum
-{
-	Tmach_semcreate = 3418,
-	Rmach_semcreate = Tmach_semcreate + Reply,
-
-	Tmach_semdestroy = 3419,
-	Rmach_semdestroy = Tmach_semdestroy + Reply,
-
-	// Mach calls that get interrupted by Unix signals
-	// return this error code.  We retry them.
-	KERN_ABORTED = 14,
-	KERN_OPERATION_TIMED_OUT = 49,
-};
-
-typedef struct Tmach_semcreateMsg Tmach_semcreateMsg;
-typedef struct Rmach_semcreateMsg Rmach_semcreateMsg;
-typedef struct Tmach_semdestroyMsg Tmach_semdestroyMsg;
-// Rmach_semdestroyMsg = CodeMsg
-
-#pragma pack on
-struct Tmach_semcreateMsg
-{
-	MachHeader h;
-	MachNDR ndr;
-	int32 policy;
-	int32 value;
-};
-
-struct Rmach_semcreateMsg
-{
-	MachHeader h;
-	MachBody body;
-	MachPort semaphore;
-};
-
-struct Tmach_semdestroyMsg
-{
-	MachHeader h;
-	MachBody body;
-	MachPort semaphore;
-};
-#pragma pack off
-
-uint32
-runtime·mach_semcreate(void)
-{
-	union {
-		Tmach_semcreateMsg tx;
-		Rmach_semcreateMsg rx;
-		uint8 pad[MinMachMsg];
-	} m;
-	int32 r;
-
-	m.tx.h.msgh_bits = 0;
-	m.tx.h.msgh_size = sizeof(m.tx);
-	m.tx.h.msgh_remote_port = runtime·mach_task_self();
-	m.tx.h.msgh_id = Tmach_semcreate;
-	m.tx.ndr = zerondr;
-
-	m.tx.policy = 0;	// 0 = SYNC_POLICY_FIFO
-	m.tx.value = 0;
-
-	while((r = machcall(&m.tx.h, sizeof m, sizeof(m.rx))) != 0){
-		if(r == KERN_ABORTED)	// interrupted
-			continue;
-		macherror(r, "semaphore_create");
-	}
-	if(m.rx.body.msgh_descriptor_count != 1)
-		unimplemented("mach_semcreate desc count");
-	return m.rx.semaphore.name;
-}
-
-void
-runtime·mach_semdestroy(uint32 sem)
-{
-	union {
-		Tmach_semdestroyMsg tx;
-		uint8 pad[MinMachMsg];
-	} m;
-	int32 r;
-
-	m.tx.h.msgh_bits = MACH_MSGH_BITS_COMPLEX;
-	m.tx.h.msgh_size = sizeof(m.tx);
-	m.tx.h.msgh_remote_port = runtime·mach_task_self();
-	m.tx.h.msgh_id = Tmach_semdestroy;
-	m.tx.body.msgh_descriptor_count = 1;
-	m.tx.semaphore.name = sem;
-	m.tx.semaphore.disposition = MACH_MSG_TYPE_MOVE_SEND;
-	m.tx.semaphore.type = 0;
-
-	while((r = machcall(&m.tx.h, sizeof m, 0)) != 0){
-		if(r == KERN_ABORTED)	// interrupted
-			continue;
-		macherror(r, "semaphore_destroy");
-	}
-}
-
-// The other calls have simple system call traps in sys_darwin_{amd64,386}.s
-int32 runtime·mach_semaphore_wait(uint32 sema);
-int32 runtime·mach_semaphore_timedwait(uint32 sema, uint32 sec, uint32 nsec);
-int32 runtime·mach_semaphore_signal(uint32 sema);
-int32 runtime·mach_semaphore_signal_all(uint32 sema);
-
-int32
-runtime·mach_semacquire(uint32 sem, int64 ns)
-{
-	int32 r;
-
-	if(ns >= 0) {
-		r = runtime·mach_semaphore_timedwait(sem, ns/1000000000LL, ns%1000000000LL);
-		if(r == KERN_ABORTED || r == KERN_OPERATION_TIMED_OUT)
-			return -1;
-		if(r != 0)
-			macherror(r, "semaphore_wait");
-		return 0;
-	}
-	while((r = runtime·mach_semaphore_wait(sem)) != 0) {
-		if(r == KERN_ABORTED)	// interrupted
-			continue;
-		macherror(r, "semaphore_wait");
-	}
-	return 0;
-}
-
-void
-runtime·mach_semrelease(uint32 sem)
-{
-	int32 r;
-
-	while((r = runtime·mach_semaphore_signal(sem)) != 0) {
-		if(r == KERN_ABORTED)	// interrupted
-			continue;
-		macherror(r, "semaphore_signal");
-	}
-}
-
-void
-runtime·sigpanic(void)
-{
-	switch(g->sig) {
-	case SIGBUS:
-		if(g->sigcode0 == BUS_ADRERR && g->sigcode1 < 0x1000) {
-			if(g->sigpc == 0)
-				runtime·panicstring("call of nil func value");
-			runtime·panicstring("invalid memory address or nil pointer dereference");
-		}
-		runtime·printf("unexpected fault address %p\n", g->sigcode1);
-		runtime·throw("fault");
-	case SIGSEGV:
-		if((g->sigcode0 == 0 || g->sigcode0 == SEGV_MAPERR || g->sigcode0 == SEGV_ACCERR) && g->sigcode1 < 0x1000) {
-			if(g->sigpc == 0)
-				runtime·panicstring("call of nil func value");
-			runtime·panicstring("invalid memory address or nil pointer dereference");
-		}
-		runtime·printf("unexpected fault address %p\n", g->sigcode1);
-		runtime·throw("fault");
-	case SIGFPE:
-		switch(g->sigcode0) {
-		case FPE_INTDIV:
-			runtime·panicstring("integer divide by zero");
-		case FPE_INTOVF:
-			runtime·panicstring("integer overflow");
-		}
-		runtime·panicstring("floating point error");
-	}
-	runtime·panicstring(runtime·sigtab[g->sig].name);
-}
-
-#pragma textflag 7
-void
-runtime·osyield(void)
-{
-	runtime·usleep(1);
-}
-
-uintptr
-runtime·memlimit(void)
-{
-	// NOTE(rsc): Could use getrlimit here,
-	// like on FreeBSD or Linux, but Darwin doesn't enforce
-	// ulimit -v, so it's unclear why we'd try to stay within
-	// the limit.
-	return 0;
-}
-
-// NOTE(rsc): On OS X, when the CPU profiling timer expires, the SIGPROF
-// signal is not guaranteed to be sent to the thread that was executing to
-// cause it to expire.  It can and often does go to a sleeping thread, which is
-// not interesting for our profile.  This is filed Apple Bug Report #9177434,
-// copied to http://code.google.com/p/go/source/detail?r=35b716c94225.
-// To work around this bug, we disable receipt of the profiling signal on
-// a thread while in blocking system calls.  This forces the kernel to deliver
-// the profiling signal to an executing thread.
-//
-// The workaround fails on OS X machines using a 64-bit Snow Leopard kernel.
-// In that configuration, the kernel appears to want to deliver SIGPROF to the
-// sleeping threads regardless of signal mask and, worse, does not deliver
-// the signal until the thread wakes up on its own.
-//
-// If necessary, we can switch to using ITIMER_REAL for OS X and handle
-// the kernel-generated SIGALRM by generating our own SIGALRMs to deliver
-// to all the running threads.  SIGALRM does not appear to be affected by
-// the 64-bit Snow Leopard bug.  However, as of this writing Mountain Lion
-// is in preview, making Snow Leopard two versions old, so it is unclear how
-// much effort we need to spend on one buggy kernel.
-
-// Control whether profiling signal can be delivered to this thread.
-void
-runtime·setprof(bool on)
-{
-	if(on)
-		runtime·sigprocmask(SIG_UNBLOCK, &sigset_prof, nil);
-	else
-		runtime·sigprocmask(SIG_BLOCK, &sigset_prof, nil);
-}
-
-static int8 badcallback[] = "runtime: cgo callback on thread not created by Go.\n";
-
-// This runs on a foreign stack, without an m or a g.  No stack split.
-#pragma textflag 7
-void
-runtime·badcallback(void)
-{
-	runtime·write(2, badcallback, sizeof badcallback - 1);
-}
-
-static int8 badsignal[] = "runtime: signal received on thread not created by Go: ";
-
-// This runs on a foreign stack, without an m or a g.  No stack split.
-#pragma textflag 7
-void
-runtime·badsignal(int32 sig)
-{
-	if (sig == SIGPROF) {
-		return;  // Ignore SIGPROFs intended for a non-Go thread.
-	}
-	runtime·write(2, badsignal, sizeof badsignal - 1);
-	if (0 <= sig && sig < NSIG) {
-		// Call runtime·findnull dynamically to circumvent static stack size check.
-		static int32 (*findnull)(byte*) = runtime·findnull;
-		runtime·write(2, runtime·sigtab[sig].name, findnull((byte*)runtime·sigtab[sig].name));
-	}
-	runtime·write(2, "\n", 1);
-	runtime·exit(1);
-}