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[Qemu-devel] [RFC PATCH v1 8/9] util/qemu-thread-*: add qemu_lock, locke
From: |
Alex Bennée |
Subject: |
[Qemu-devel] [RFC PATCH v1 8/9] util/qemu-thread-*: add qemu_lock, locked and unlock trace events |
Date: |
Fri, 5 May 2017 11:38:21 +0100 |
Signed-off-by: Alex Bennée <address@hidden>
---
include/qemu/thread.h | 7 +++++--
util/qemu-thread-posix.c | 11 +++++++++--
util/trace-events | 5 +++++
3 files changed, 19 insertions(+), 4 deletions(-)
diff --git a/include/qemu/thread.h b/include/qemu/thread.h
index 9910f49b3a..ddea4990c0 100644
--- a/include/qemu/thread.h
+++ b/include/qemu/thread.h
@@ -22,9 +22,12 @@ typedef struct QemuThread QemuThread;
void qemu_mutex_init(QemuMutex *mutex);
void qemu_mutex_destroy(QemuMutex *mutex);
-void qemu_mutex_lock(QemuMutex *mutex);
int qemu_mutex_trylock(QemuMutex *mutex);
-void qemu_mutex_unlock(QemuMutex *mutex);
+void qemu_mutex_lock_impl(QemuMutex *mutex, const char *file, const int line);
+void qemu_mutex_unlock_impl(QemuMutex *mutex, const char *file, const int
line);
+
+#define qemu_mutex_lock(mutex) qemu_mutex_lock_impl(mutex, __FILE__, __LINE__)
+#define qemu_mutex_unlock(mutex) qemu_mutex_unlock_impl(mutex, __FILE__,
__LINE__)
/* Prototypes for other functions are in thread-posix.h/thread-win32.h. */
void qemu_rec_mutex_init(QemuRecMutex *mutex);
diff --git a/util/qemu-thread-posix.c b/util/qemu-thread-posix.c
index 73e3a0edf5..9da1c9e756 100644
--- a/util/qemu-thread-posix.c
+++ b/util/qemu-thread-posix.c
@@ -14,6 +14,7 @@
#include "qemu/thread.h"
#include "qemu/atomic.h"
#include "qemu/notify.h"
+#include "trace.h"
static bool name_threads;
@@ -53,13 +54,17 @@ void qemu_mutex_destroy(QemuMutex *mutex)
error_exit(err, __func__);
}
-void qemu_mutex_lock(QemuMutex *mutex)
+void qemu_mutex_lock_impl(QemuMutex *mutex, const char *file, const int line)
{
int err;
+ trace_qemu_mutex_lock(mutex, file, line);
+
err = pthread_mutex_lock(&mutex->lock);
if (err)
error_exit(err, __func__);
+
+ trace_qemu_mutex_locked(mutex, file, line);
}
int qemu_mutex_trylock(QemuMutex *mutex)
@@ -67,13 +72,15 @@ int qemu_mutex_trylock(QemuMutex *mutex)
return pthread_mutex_trylock(&mutex->lock);
}
-void qemu_mutex_unlock(QemuMutex *mutex)
+void qemu_mutex_unlock_impl(QemuMutex *mutex, const char *file, const int line)
{
int err;
err = pthread_mutex_unlock(&mutex->lock);
if (err)
error_exit(err, __func__);
+
+ trace_qemu_mutex_unlock(mutex, file, line);
}
void qemu_rec_mutex_init(QemuRecMutex *mutex)
diff --git a/util/trace-events b/util/trace-events
index b44ef4f895..972d7e1786 100644
--- a/util/trace-events
+++ b/util/trace-events
@@ -34,6 +34,11 @@ qemu_co_mutex_lock_return(void *mutex, void *self) "mutex %p
self %p"
qemu_co_mutex_unlock_entry(void *mutex, void *self) "mutex %p self %p"
qemu_co_mutex_unlock_return(void *mutex, void *self) "mutex %p self %p"
+# util/qemu-thread.c
+qemu_mutex_lock(void *mutex, const char *file, const int line) "waiting on
mutex %p (%s:%d)"
+qemu_mutex_locked(void *mutex, const char *file, const int line) "taken mutex
%p (%s:%d)"
+qemu_mutex_unlock(void *mutex, const char *file, const int line) "released
mutex %p (%s:%d)"
+
# util/oslib-win32.c
# util/oslib-posix.c
qemu_memalign(size_t alignment, size_t size, void *ptr) "alignment %zu size
%zu ptr %p"
--
2.11.0
- [Qemu-devel] [RFC PATCH v1 0/9] BQL and Replay Lock changes, Alex Bennée, 2017/05/05
- [Qemu-devel] [RFC PATCH v1 1/9] target/arm/arm-powertctl: drop BQL assertions, Alex Bennée, 2017/05/05
- [Qemu-devel] [RFC PATCH v1 5/9] replay: make locking visible outside replay code, Alex Bennée, 2017/05/05
- [Qemu-devel] [RFC PATCH v1 2/9] cpus: push BQL lock to qemu_*_wait_io_event, Alex Bennée, 2017/05/05
- [Qemu-devel] [RFC PATCH v1 3/9] cpus: only take BQL for sleeping threads, Alex Bennée, 2017/05/05
- [Qemu-devel] [RFC PATCH v1 4/9] replay/replay-internal.c: track holding of replay_lock, Alex Bennée, 2017/05/05
- [Qemu-devel] [RFC PATCH v1 8/9] util/qemu-thread-*: add qemu_lock, locked and unlock trace events,
Alex Bennée <=
- Re: [Qemu-devel] [RFC PATCH v1 8/9] util/qemu-thread-*: add qemu_lock, locked and unlock trace events, Paolo Bonzini, 2017/05/05
- Re: [Qemu-devel] [RFC PATCH v1 8/9] util/qemu-thread-*: add qemu_lock, locked and unlock trace events, Alex Bennée, 2017/05/05
- Re: [Qemu-devel] [RFC PATCH v1 8/9] util/qemu-thread-*: add qemu_lock, locked and unlock trace events, Paolo Bonzini, 2017/05/06
- Re: [Qemu-devel] [RFC PATCH v1 8/9] util/qemu-thread-*: add qemu_lock, locked and unlock trace events, Stefan Hajnoczi, 2017/05/08
- Re: [Qemu-devel] [RFC PATCH v1 8/9] util/qemu-thread-*: add qemu_lock, locked and unlock trace events, Alex Bennée, 2017/05/09
- Re: [Qemu-devel] [RFC PATCH v1 8/9] util/qemu-thread-*: add qemu_lock, locked and unlock trace events, Paolo Bonzini, 2017/05/09
[Qemu-devel] [RFC PATCH v1 6/9] replay: push replay_mutex_lock up the call tree, Alex Bennée, 2017/05/05
[Qemu-devel] [RFC PATCH v1 7/9] scripts/qemu-gdb: add simple tcg lock status helper, Alex Bennée, 2017/05/05
[Qemu-devel] [RFC PATCH v1 9/9] scripts/analyse-locks-simpletrace.py: script to analyse lock times, Alex Bennée, 2017/05/05
Re: [Qemu-devel] [RFC PATCH v1 0/9] BQL and Replay Lock changes, no-reply, 2017/05/05