We will conditionally have a wrapper layer depending on whether the host
has the PTHREAD_SETNAME capability. It complicates stuff. Let's keep
the wrapper there; we opt out the pthread_setname_np() call only.
Signed-off-by: Peter Xu <peterx@redhat.com>
---
v2:
- set thread name only conditionally [Eric]
---
util/qemu-thread-posix.c | 33 +++++++++++++--------------------
1 file changed, 13 insertions(+), 20 deletions(-)
diff --git a/util/qemu-thread-posix.c b/util/qemu-thread-posix.c
index b789cf32e9..a1c34ba6f2 100644
--- a/util/qemu-thread-posix.c
+++ b/util/qemu-thread-posix.c
@@ -482,7 +482,6 @@ static void __attribute__((constructor)) qemu_thread_atexit_init(void)
}
-#ifdef CONFIG_PTHREAD_SETNAME_NP
typedef struct {
void *(*start_routine)(void *);
void *arg;
@@ -495,16 +494,18 @@ static void *qemu_thread_start(void *args)
void *(*start_routine)(void *) = qemu_thread_args->start_routine;
void *arg = qemu_thread_args->arg;
+#ifdef CONFIG_PTHREAD_SETNAME_NP
/* Attempt to set the threads name; note that this is for debug, so
* we're not going to fail if we can't set it.
*/
- pthread_setname_np(pthread_self(), qemu_thread_args->name);
+ if (name_threads && qemu_thread_args->name) {
+ pthread_setname_np(pthread_self(), qemu_thread_args->name);
+ }
+#endif
g_free(qemu_thread_args->name);
g_free(qemu_thread_args);
return start_routine(arg);
}
-#endif
-
void qemu_thread_create(QemuThread *thread, const char *name,
void *(*start_routine)(void*),
@@ -513,6 +514,7 @@ void qemu_thread_create(QemuThread *thread, const char *name,
sigset_t set, oldset;
int err;
pthread_attr_t attr;
+ QemuThreadArgs *qemu_thread_args;
err = pthread_attr_init(&attr);
if (err) {
@@ -527,22 +529,13 @@ void qemu_thread_create(QemuThread *thread, const char *name,
sigfillset(&set);
pthread_sigmask(SIG_SETMASK, &set, &oldset);
-#ifdef CONFIG_PTHREAD_SETNAME_NP
- if (name_threads) {
- QemuThreadArgs *qemu_thread_args;
- qemu_thread_args = g_new0(QemuThreadArgs, 1);
- qemu_thread_args->name = g_strdup(name);
- qemu_thread_args->start_routine = start_routine;
- qemu_thread_args->arg = arg;
-
- err = pthread_create(&thread->thread, &attr,
- qemu_thread_start, qemu_thread_args);
- } else
-#endif
- {
- err = pthread_create(&thread->thread, &attr,
- start_routine, arg);
- }
+ qemu_thread_args = g_new0(QemuThreadArgs, 1);
+ qemu_thread_args->name = g_strdup(name);
+ qemu_thread_args->start_routine = start_routine;
+ qemu_thread_args->arg = arg;
+
+ err = pthread_create(&thread->thread, &attr,
+ qemu_thread_start, qemu_thread_args);
if (err)
error_exit(err, __func__);
--
2.14.3
On Thu, 04/12 13:34, Peter Xu wrote: > We will conditionally have a wrapper layer depending on whether the host > has the PTHREAD_SETNAME capability. It complicates stuff. Let's keep > the wrapper there; we opt out the pthread_setname_np() call only. > > Signed-off-by: Peter Xu <peterx@redhat.com> > --- > v2: > - set thread name only conditionally [Eric] > --- > util/qemu-thread-posix.c | 33 +++++++++++++-------------------- > 1 file changed, 13 insertions(+), 20 deletions(-) > > diff --git a/util/qemu-thread-posix.c b/util/qemu-thread-posix.c > index b789cf32e9..a1c34ba6f2 100644 > --- a/util/qemu-thread-posix.c > +++ b/util/qemu-thread-posix.c > @@ -482,7 +482,6 @@ static void __attribute__((constructor)) qemu_thread_atexit_init(void) > } > > > -#ifdef CONFIG_PTHREAD_SETNAME_NP > typedef struct { > void *(*start_routine)(void *); > void *arg; > @@ -495,16 +494,18 @@ static void *qemu_thread_start(void *args) > void *(*start_routine)(void *) = qemu_thread_args->start_routine; > void *arg = qemu_thread_args->arg; > > +#ifdef CONFIG_PTHREAD_SETNAME_NP > /* Attempt to set the threads name; note that this is for debug, so > * we're not going to fail if we can't set it. > */ > - pthread_setname_np(pthread_self(), qemu_thread_args->name); > + if (name_threads && qemu_thread_args->name) { > + pthread_setname_np(pthread_self(), qemu_thread_args->name); > + } > +#endif > g_free(qemu_thread_args->name); > g_free(qemu_thread_args); > return start_routine(arg); > } > -#endif > - > > void qemu_thread_create(QemuThread *thread, const char *name, > void *(*start_routine)(void*), > @@ -513,6 +514,7 @@ void qemu_thread_create(QemuThread *thread, const char *name, > sigset_t set, oldset; > int err; > pthread_attr_t attr; > + QemuThreadArgs *qemu_thread_args; > > err = pthread_attr_init(&attr); > if (err) { > @@ -527,22 +529,13 @@ void qemu_thread_create(QemuThread *thread, const char *name, > sigfillset(&set); > pthread_sigmask(SIG_SETMASK, &set, &oldset); > > -#ifdef CONFIG_PTHREAD_SETNAME_NP > - if (name_threads) { > - QemuThreadArgs *qemu_thread_args; > - qemu_thread_args = g_new0(QemuThreadArgs, 1); > - qemu_thread_args->name = g_strdup(name); > - qemu_thread_args->start_routine = start_routine; > - qemu_thread_args->arg = arg; > - > - err = pthread_create(&thread->thread, &attr, > - qemu_thread_start, qemu_thread_args); > - } else > -#endif > - { > - err = pthread_create(&thread->thread, &attr, > - start_routine, arg); > - } > + qemu_thread_args = g_new0(QemuThreadArgs, 1); > + qemu_thread_args->name = g_strdup(name); > + qemu_thread_args->start_routine = start_routine; > + qemu_thread_args->arg = arg; > + > + err = pthread_create(&thread->thread, &attr, > + qemu_thread_start, qemu_thread_args); > > if (err) > error_exit(err, __func__); > -- > 2.14.3 > Reviewed-by: Fam Zheng <famz@redhat.com>
© 2016 - 2024 Red Hat, Inc.