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/*
* Copyright (c) 2011 Ken McDonell. All Rights Reserved.
*
* exercise multi-threaded checks for PM_CONTEXT_LOCAL
*/
#include <stdio.h>
#include <stdlib.h>
#include <pcp/pmapi.h>
#include <pcp/impl.h>
#include <pthread.h>
#if darwin_hack
#include <dlfcn.h>
#endif
#ifndef HAVE_PTHREAD_BARRIER_T
#include "pthread_barrier.h"
#endif
static pthread_barrier_t barrier;
static int ctx = -1;
static char *namelist[] = { "sampledso.colour" };
static pmID pmidlist[] = { 0 };
static pmDesc desc;
static char **instname;
static int *instance;
static pmResult *rp;
static void
func(void)
{
int sts;
char **children;
char *p;
if ((sts = pmUseContext(ctx)) < 0) {
printf("pmUseContext(%d): %s\n", ctx, pmErrStr(sts));
pthread_exit(NULL);
}
/*
* expect this to fail for the second thread through when
* using PM_CONTEXT_LOCAL
*/
if ((sts = pmDupContext()) < 0)
printf("pmDupContext: %s\n", pmErrStr(sts));
else
printf("pmDupContext: -> %d\n", sts);
if ((sts = pmUseContext(ctx)) < 0) {
printf("pmUseContext(%d): %s\n", ctx, pmErrStr(sts));
pthread_exit(NULL);
}
else
printf("pmUseContext(%d) -> %d\n", ctx, sts);
if ((sts = pmLookupName(1, namelist, pmidlist)) < 0)
printf("pmLookupName: %s\n", pmErrStr(sts));
else
printf("pmLookupName: -> %s\n", pmIDStr(pmidlist[0]));
pthread_barrier_wait(&barrier);
if (pmidlist[0] == 0)
pthread_exit("Loser failed to get pmid!");
if ((sts = pmGetPMNSLocation()) < 0)
printf("pmGetPMNSLocation: %s\n", pmErrStr(sts));
else
printf("pmGetPMNSLocation: -> %d\n", sts);
/* leaf node, expect no children */
if ((sts = pmGetChildrenStatus(namelist[0], &children, NULL)) < 0)
printf("pmGetChildrenStatus: %s\n", pmErrStr(sts));
else
printf("pmGetChildrenStatus: -> %d\n", sts);
if ((sts = pmLookupDesc(pmidlist[0], &desc)) < 0)
printf("pmLookupDesc: %s\n", pmErrStr(sts));
else
printf("pmLookupDesc: -> %s type=%s indom=%s\n", pmIDStr(desc.pmid), pmTypeStr(desc.type), pmInDomStr(desc.indom));
pthread_barrier_wait(&barrier);
if (desc.pmid == 0)
pthread_exit("Loser failed to get pmDesc!");
if ((sts = pmLookupText(pmidlist[0], PM_TEXT_ONELINE, &p)) < 0)
printf("pmLookupText: %s\n", pmErrStr(sts));
else
printf("pmLookupText: -> %s\n", p);
if ((sts = pmGetInDom(desc.indom, &instance, &instname)) < 0)
printf("pmGetInDom: %s: %s\n", pmInDomStr(desc.indom), pmErrStr(sts));
else
printf("pmGetInDom: -> %d\n", sts);
pthread_barrier_wait(&barrier);
if (instance == NULL)
pthread_exit("Loser failed to get indom!");
if ((sts = pmNameInDom(desc.indom, instance[0], &p)) < 0)
printf("pmNameInDom: %s\n", pmErrStr(sts));
else
printf("pmNameInDom: %d -> %s\n", instance[0], p);
if ((sts = pmLookupInDom(desc.indom, instname[0])) < 0)
printf("pmLookupInDom: %s\n", pmErrStr(sts));
else
printf("pmLookupInDom: %s -> %d\n", instname[0], sts);
if ((sts = pmFetch(1, pmidlist, &rp)) < 0)
printf("pmFetch: %s\n", pmErrStr(sts));
else
printf("pmFetch: -> OK\n");
pthread_barrier_wait(&barrier);
if (rp == NULL)
pthread_exit("Loser failed to get pmResult!");
if ((sts = pmStore(rp)) < 0)
printf("pmStore: %s\n", pmErrStr(sts));
else
printf("pmStore: -> OK\n");
pthread_exit(NULL);
}
static void *
func1(void *arg)
{
int sts;
if ((sts = pmNewContext(PM_CONTEXT_LOCAL, NULL)) < 0)
printf("pmNewContext: %s\n", pmErrStr(sts));
else {
ctx = sts;
printf("pmNewContext: -> %d\n", ctx);
}
pthread_barrier_wait(&barrier);
pthread_barrier_wait(&barrier);
func();
/*NOTREACHED*/
return NULL;
}
static void *
func2(void *arg)
{
int sts;
pthread_barrier_wait(&barrier);
/*
* expect this to fail for the second thread through when
* using PM_CONTEXT_LOCAL
*/
if ((sts = pmNewContext(PM_CONTEXT_LOCAL, NULL)) < 0)
printf("pmNewContext: %s\n", pmErrStr(sts));
else {
ctx = sts;
printf("pmNewContext: -> %d\n", ctx);
}
pthread_barrier_wait(&barrier);
func();
/*NOTREACHED*/
return NULL;
}
int
main()
{
pthread_t tid1;
pthread_t tid2;
int sts;
char *msg;
#if darwin_hack
/*
* This is just too bizarre!
* On Mac OS X, if one falls into the "CoreFoundation" libraries
* in a thread, without first having run the initialization code
* from the mainline, you die with a SIGTRAP! Calling dlopen() with
* doomed to fail parameters suffices.
*
* See also the -framework CoreFoundation glue needed in
* GNUmakefile.
*
* I am not making this up, check out
* http://openradar.appspot.com/7209349
*/
dlopen("/no/such/dso", RTLD_LAZY);
#endif
sts = pthread_barrier_init(&barrier, NULL, 2);
if (sts != 0) {
printf("pthread_barrier_init: sts=%d\n", sts);
exit(1);
}
sts = pthread_create(&tid1, NULL, func1, NULL);
if (sts != 0) {
printf("pthread_create: tid1: sts=%d\n", sts);
exit(1);
}
sts = pthread_create(&tid2, NULL, func2, NULL);
if (sts != 0) {
printf("pthread_create: tid2: sts=%d\n", sts);
exit(1);
}
pthread_join(tid1, (void *)&msg);
if (msg != NULL) printf("tid1: %s\n", msg);
pthread_join(tid2, (void *)&msg);
if (msg != NULL) printf("tid2: %s\n", msg);
if (rp != NULL)
pmFreeResult(rp);
exit(0);
}
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