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wrappers: remove use of pthread_setname_np

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This is not supported by ulibc, however since prctl is part of standard
Linux kernel since 2.6.9, I've added a thin wrapper around thread startup
to call that method from within the thread.
This commit is contained in:
Adam Sutton 2013-09-25 21:55:59 +01:00
parent 7707693d37
commit 796de8245c
1 changed files with 33 additions and 9 deletions
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42
src/wrappers.c
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@ -3,6 +3,7 @@
#include <fcntl.h>
#include <sys/types.h> /* See NOTES */
#include <sys/socket.h>
#include <sys/prctl.h>
#include <unistd.h>
#include <pthread.h>
@ -81,15 +82,38 @@ tvh_write(int fd, const void *buf, size_t len)
return len ? 1 : 0;
}
int tvhthread_create0(pthread_t *thread, const pthread_attr_t *attr,
void *(*start_routine) (void *), void *arg, const char *name)
struct
thread_state {
void *(*run)(void*);
void *arg;
char name[17];
};
static void *
thread_wrapper ( void *p )
{
int r;
char buf[16] = { 0 };
strncpy(buf, name, sizeof(buf)-1);
r = pthread_create(thread, attr, start_routine, arg);
tvhdebug("thread", "created thread %ld [%s / %p]", *thread, name, start_routine);
if (r) return r;
pthread_setname_np(*thread, buf);
struct thread_state *ts = p;
/* Set name */
prctl(PR_SET_NAME, ts->name);
/* Run */
tvhdebug("thread", "created thread %ld [%s / %p(%p)]",
pthread_self(), ts->name, ts->run, ts->arg);
void *r = ts->run(ts->arg);
free(ts);
return r;
}
int
tvhthread_create0
(pthread_t *thread, const pthread_attr_t *attr,
void *(*start_routine) (void *), void *arg, const char *name)
{
struct thread_state *ts = calloc(1, sizeof(struct thread_state));
strncpy(ts->name, name, sizeof(ts->name));
ts->run = start_routine;
ts->arg = arg;
return pthread_create(thread, attr, thread_wrapper, ts);
}