From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: pbonzini@redhat.com, thuth@redhat.com, ehabkost@redhat.com
Subject: [PATCH v2 5/8] util: Use unique type for QemuRecMutex in thread-posix.h
Date: Mon, 14 Jun 2021 16:31:40 -0700 [thread overview]
Message-ID: <20210614233143.1221879-6-richard.henderson@linaro.org> (raw)
In-Reply-To: <20210614233143.1221879-1-richard.henderson@linaro.org>
We will shortly convert lockable.h to _Generic, and we cannot
have two compatible types in the same expansion. Wrap QemuMutex
in a struct, and unwrap in qemu-thread-posix.c.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
include/qemu/thread-posix.h | 10 ++++++++--
util/qemu-thread-posix.c | 12 ++++++------
2 files changed, 14 insertions(+), 8 deletions(-)
diff --git a/include/qemu/thread-posix.h b/include/qemu/thread-posix.h
index cf8bc90468..b792e6ef37 100644
--- a/include/qemu/thread-posix.h
+++ b/include/qemu/thread-posix.h
@@ -4,8 +4,6 @@
#include <pthread.h>
#include <semaphore.h>
-typedef QemuMutex QemuRecMutex;
-
struct QemuMutex {
pthread_mutex_t lock;
#ifdef CONFIG_DEBUG_MUTEX
@@ -15,6 +13,14 @@ struct QemuMutex {
bool initialized;
};
+/*
+ * QemuRecMutex cannot be a typedef of QemuMutex lest we have two
+ * compatible cases in _Generic. See qemu/lockable.h.
+ */
+typedef struct QemuRecMutex {
+ QemuMutex m;
+} QemuRecMutex;
+
struct QemuCond {
pthread_cond_t cond;
bool initialized;
diff --git a/util/qemu-thread-posix.c b/util/qemu-thread-posix.c
index d990826ed8..fd9d714038 100644
--- a/util/qemu-thread-posix.c
+++ b/util/qemu-thread-posix.c
@@ -116,32 +116,32 @@ void qemu_rec_mutex_init(QemuRecMutex *mutex)
pthread_mutexattr_init(&attr);
pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
- err = pthread_mutex_init(&mutex->lock, &attr);
+ err = pthread_mutex_init(&mutex->m.lock, &attr);
pthread_mutexattr_destroy(&attr);
if (err) {
error_exit(err, __func__);
}
- mutex->initialized = true;
+ mutex->m.initialized = true;
}
void qemu_rec_mutex_destroy(QemuRecMutex *mutex)
{
- qemu_mutex_destroy(mutex);
+ qemu_mutex_destroy(&mutex->m);
}
void qemu_rec_mutex_lock_impl(QemuRecMutex *mutex, const char *file, int line)
{
- qemu_mutex_lock_impl(mutex, file, line);
+ qemu_mutex_lock_impl(&mutex->m, file, line);
}
int qemu_rec_mutex_trylock_impl(QemuRecMutex *mutex, const char *file, int line)
{
- return qemu_mutex_trylock_impl(mutex, file, line);
+ return qemu_mutex_trylock_impl(&mutex->m, file, line);
}
void qemu_rec_mutex_unlock_impl(QemuRecMutex *mutex, const char *file, int line)
{
- qemu_mutex_unlock_impl(mutex, file, line);
+ qemu_mutex_unlock_impl(&mutex->m, file, line);
}
void qemu_cond_init(QemuCond *cond)
--
2.25.1
next prev parent reply other threads:[~2021-06-14 23:34 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-14 23:31 [PATCH v2 0/8] configure: Change to -std=gnu11 Richard Henderson
2021-06-14 23:31 ` [PATCH v2 1/8] configure: Use -std=gnu11 Richard Henderson
2021-06-15 7:43 ` Thomas Huth
2021-06-15 10:10 ` Alex Bennée
2021-06-15 13:49 ` Philippe Mathieu-Daudé
2021-06-14 23:31 ` [PATCH v2 2/8] softfloat: Use _Generic instead of QEMU_GENERIC Richard Henderson
2021-06-15 7:48 ` Thomas Huth
2021-06-15 10:18 ` Alex Bennée
2021-06-14 23:31 ` [PATCH v2 3/8] util: Use real functions for thread-posix QemuRecMutex Richard Henderson
2021-06-15 7:50 ` Thomas Huth
2021-06-15 10:54 ` Alex Bennée
2021-06-14 23:31 ` [PATCH v2 4/8] util: Pass file+line to qemu_rec_mutex_unlock_impl Richard Henderson
2021-06-15 10:56 ` Alex Bennée
2021-06-15 13:51 ` Philippe Mathieu-Daudé
2021-06-14 23:31 ` Richard Henderson [this message]
2021-06-15 7:56 ` [PATCH v2 5/8] util: Use unique type for QemuRecMutex in thread-posix.h Thomas Huth
2021-06-15 10:57 ` Alex Bennée
2021-06-14 23:31 ` [PATCH v2 6/8] include/qemu/lockable: Use _Generic instead of QEMU_GENERIC Richard Henderson
2021-06-15 11:25 ` Alex Bennée
2021-06-14 23:31 ` [PATCH v2 7/8] qemu/compiler: Remove QEMU_GENERIC Richard Henderson
2021-06-15 11:26 ` Alex Bennée
2021-06-14 23:31 ` [PATCH v2 8/8] configure: Remove probe for _Static_assert Richard Henderson
2021-06-15 7:58 ` Thomas Huth
2021-06-15 10:29 ` Alex Bennée
2021-06-14 23:42 ` [PATCH v2 0/8] configure: Change to -std=gnu11 no-reply
2021-06-16 13:04 ` Paolo Bonzini
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