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thread-posix: add support for setting threads name on OpenBSD

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Make use of pthread_set_name_np() to be able to set the threads name
on OpenBSD.

Signed-off-by: Brad Smith <brad@comstyle.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <Y57NrCmPTVSXLWC4@humpty.home.comstyle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Brad Smith 2022-12-18 03:22:04 -05:00 committed by Paolo Bonzini
parent 6fbef9426b
commit 3ada67a306
2 changed files with 20 additions and 1 deletions
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12
meson.build
View File

@ -2133,6 +2133,18 @@ config_host_data.set('CONFIG_PTHREAD_SETNAME_NP_WO_TID', cc.links(gnu_source_pre
pthread_create(&thread, 0, f, 0);
return 0;
}''', dependencies: threads))
config_host_data.set('CONFIG_PTHREAD_SET_NAME_NP', cc.links(gnu_source_prefix + '''
#include <pthread.h>
#include <pthread_np.h>
static void *f(void *p) { return NULL; }
int main(void)
{
pthread_t thread;
pthread_create(&thread, 0, f, 0);
pthread_set_name_np(thread, "QEMU");
return 0;
}''', dependencies: threads))
config_host_data.set('CONFIG_PTHREAD_CONDATTR_SETCLOCK', cc.links(gnu_source_prefix + '''
#include <pthread.h>
#include <time.h>

9
util/qemu-thread-posix.c
View File

@ -18,6 +18,10 @@
#include "qemu/tsan.h"
#include "qemu/bitmap.h"
#ifdef CONFIG_PTHREAD_SET_NAME_NP
#include <pthread_np.h>
#endif
static bool name_threads;
void qemu_thread_naming(bool enable)
@ -25,7 +29,8 @@ void qemu_thread_naming(bool enable)
name_threads = enable;
#if !defined CONFIG_PTHREAD_SETNAME_NP_W_TID && \
!defined CONFIG_PTHREAD_SETNAME_NP_WO_TID
!defined CONFIG_PTHREAD_SETNAME_NP_WO_TID && \
!defined CONFIG_PTHREAD_SET_NAME_NP
/* This is a debugging option, not fatal */
if (enable) {
fprintf(stderr, "qemu: thread naming not supported on this host\n");
@ -480,6 +485,8 @@ static void *qemu_thread_start(void *args)
pthread_setname_np(pthread_self(), qemu_thread_args->name);
# elif defined(CONFIG_PTHREAD_SETNAME_NP_WO_TID)
pthread_setname_np(qemu_thread_args->name);
# elif defined(CONFIG_PTHREAD_SET_NAME_NP)
pthread_set_name_np(pthread_self(), qemu_thread_args->name);
# endif
}
QEMU_TSAN_ANNOTATE_THREAD_NAME(qemu_thread_args->name);