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[Qemu-devel] [PATCH 1/9] Add read-write lock to QEMU
From: |
Arun R Bharadwaj |
Subject: |
[Qemu-devel] [PATCH 1/9] Add read-write lock to QEMU |
Date: |
Thu, 14 Oct 2010 17:53:20 +0530 |
User-agent: |
StGit/0.15 |
From: Sripathi Kodi <address@hidden>
Signed-off-by: Sripathi Kodi <address@hidden>
---
qemu-thread.c | 40 ++++++++++++++++++++++++++++++++++++++++
qemu-thread.h | 10 ++++++++++
2 files changed, 50 insertions(+), 0 deletions(-)
diff --git a/qemu-thread.c b/qemu-thread.c
index fbc78fe..42774ff 100644
--- a/qemu-thread.c
+++ b/qemu-thread.c
@@ -90,6 +90,46 @@ void qemu_mutex_unlock(QemuMutex *mutex)
error_exit(err, __func__);
}
+void qemu_rwmutex_init(QemuRWMutex *mutex)
+{
+ int err;
+
+ err = pthread_rwlock_init(&mutex->lock, NULL);
+ if (err) {
+ error_exit(err, __func__);
+ }
+}
+
+void qemu_rwmutex_rdlock(QemuRWMutex *mutex)
+{
+ int err;
+
+ err = pthread_rwlock_rdlock(&mutex->lock);
+ if (err) {
+ error_exit(err, __func__);
+ }
+}
+
+void qemu_rwmutex_wrlock(QemuRWMutex *mutex)
+{
+ int err;
+
+ err = pthread_rwlock_wrlock(&mutex->lock);
+ if (err) {
+ error_exit(err, __func__);
+ }
+}
+
+void qemu_rwmutex_unlock(QemuRWMutex *mutex)
+{
+ int err;
+
+ err = pthread_rwlock_unlock(&mutex->lock);
+ if (err) {
+ error_exit(err, __func__);
+ }
+}
+
void qemu_cond_init(QemuCond *cond)
{
int err;
diff --git a/qemu-thread.h b/qemu-thread.h
index 19bb30c..1b0267e 100644
--- a/qemu-thread.h
+++ b/qemu-thread.h
@@ -7,6 +7,10 @@ struct QemuMutex {
pthread_mutex_t lock;
};
+struct QemuRWMutex {
+ pthread_rwlock_t lock;
+};
+
struct QemuCond {
pthread_cond_t cond;
};
@@ -16,6 +20,7 @@ struct QemuThread {
};
typedef struct QemuMutex QemuMutex;
+typedef struct QemuRWMutex QemuRWMutex;
typedef struct QemuCond QemuCond;
typedef struct QemuThread QemuThread;
@@ -26,6 +31,11 @@ int qemu_mutex_trylock(QemuMutex *mutex);
int qemu_mutex_timedlock(QemuMutex *mutex, uint64_t msecs);
void qemu_mutex_unlock(QemuMutex *mutex);
+void qemu_rwmutex_init(QemuRWMutex *mutex);
+void qemu_rwmutex_rdlock(QemuRWMutex *mutex);
+void qemu_rwmutex_wrlock(QemuRWMutex *mutex);
+void qemu_rwmutex_unlock(QemuRWMutex *mutex);
+
void qemu_cond_init(QemuCond *cond);
void qemu_cond_destroy(QemuCond *cond);
void qemu_cond_signal(QemuCond *cond);
- [Qemu-devel] [RFC PATCH 0/9] Second threading model., Arun R Bharadwaj, 2010/10/14
- [Qemu-devel] [PATCH 1/9] Add read-write lock to QEMU,
Arun R Bharadwaj <=
- [Qemu-devel] [PATCH 2/9] Introduce lock fid_list_lock to protect the fid list., Arun R Bharadwaj, 2010/10/14
- [Qemu-devel] [PATCH 3/9] Global rename lock, Arun R Bharadwaj, 2010/10/14
- [Qemu-devel] [PATCH 4/9] Convert stat into 2nd threading model, Arun R Bharadwaj, 2010/10/14
- [Qemu-devel] [PATCH 5/9] Convert wstat into 2nd threading model, Arun R Bharadwaj, 2010/10/14
- [Qemu-devel] [PATCH 6/9] Convert open into 2nd threading model, Arun R Bharadwaj, 2010/10/14
- [Qemu-devel] [PATCH 7/9] Convert walk into 2nd threading model, Arun R Bharadwaj, 2010/10/14
- [Qemu-devel] [PATCH 8/9] Convert read into 2nd threading model, Arun R Bharadwaj, 2010/10/14
- [Qemu-devel] [PATCH 9/9] Convert write into 2nd threading model., Arun R Bharadwaj, 2010/10/14