cleanup more synchronization code

qemu/include/qemu/thread-posix.h

@@ -7,28 +7,6 @@ struct QemuMutex {
     pthread_mutex_t lock;
 };
 
-struct QemuCond {
-    pthread_cond_t cond;
-};
-
-struct QemuSemaphore {
-#if defined(__APPLE__) || defined(__NetBSD__)
-    pthread_mutex_t lock;
-    pthread_cond_t cond;
-    unsigned int count;
-#else
-    sem_t sem;
-#endif
-};
-
-struct QemuEvent {
-#ifndef __linux__
-    pthread_mutex_t lock;
-    pthread_cond_t cond;
-#endif
-    unsigned value;
-};
-
 struct QemuThread {
     pthread_t thread;
 };

qemu/include/qemu/thread-win32.h

@@ -7,20 +7,6 @@ struct QemuMutex {
     LONG owner;
 };
 
-struct QemuCond {
-    LONG waiters, target;
-    HANDLE sema;
-    HANDLE continue_event;
-};
-
-struct QemuSemaphore {
-    HANDLE sema;
-};
-
-struct QemuEvent {
-    HANDLE event;
-};
-
 typedef struct QemuThreadData QemuThreadData;
 struct QemuThread {
     QemuThreadData *data;

qemu/include/qemu/thread.h

@@ -5,9 +5,6 @@
 #include <stdbool.h>
 
 typedef struct QemuMutex QemuMutex;
-typedef struct QemuCond QemuCond;
-typedef struct QemuSemaphore QemuSemaphore;
-typedef struct QemuEvent QemuEvent;
 typedef struct QemuThread QemuThread;
 
 #ifdef _WIN32
@@ -22,24 +19,8 @@ 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);
 
-#define rcu_read_lock() do { } while (0)
-#define rcu_read_unlock() do { } while (0)
-
-void qemu_cond_init(QemuCond *cond);
-void qemu_cond_destroy(QemuCond *cond);
-
-/*
- * IMPORTANT: The implementation does not guarantee that pthread_cond_signal
- * and pthread_cond_broadcast can be called except while the same mutex is
- * held as in the corresponding pthread_cond_wait calls!
- */
-void qemu_cond_signal(QemuCond *cond);
-void qemu_cond_broadcast(QemuCond *cond);
-void qemu_cond_wait(QemuCond *cond, QemuMutex *mutex);
-
 struct uc_struct;
 // return -1 on error, 0 on success
 int qemu_thread_create(struct uc_struct *uc, QemuThread *thread, const char *name,

qemu/include/qemu/tls.h

@@ -1,52 +0,0 @@
-/*
- * Abstraction layer for defining and using TLS variables
- *
- * Copyright (c) 2011 Red Hat, Inc
- * Copyright (c) 2011 Linaro Limited
- *
- * Authors:
- *  Paolo Bonzini <pbonzini@redhat.com>
- *  Peter Maydell <peter.maydell@linaro.org>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef QEMU_TLS_H
-#define QEMU_TLS_H
-
-/* Per-thread variables. Note that we only have implementations
- * which are really thread-local on Linux; the dummy implementations
- * define plain global variables.
- *
- * This means that for the moment use should be restricted to
- * per-VCPU variables, which are OK because:
- *  - the only -user mode supporting multiple VCPU threads is linux-user
- *  - TCG system mode is single-threaded regarding VCPUs
- *  - KVM system mode is multi-threaded but limited to Linux
- *
- * TODO: proper implementations via Win32 .tls sections and
- * POSIX pthread_getspecific.
- */
-#ifdef __linux__
-#define DECLARE_TLS(type, x) extern DEFINE_TLS(type, x)
-#define DEFINE_TLS(type, x)  __thread __typeof__(type) tls__##x
-#define tls_var(x)           tls__##x
-#else
-/* Dummy implementations which define plain global variables */
-#define DECLARE_TLS(type, x) extern DEFINE_TLS(type, x)
-#define DEFINE_TLS(type, x)  __typeof__(type) tls__##x
-#define tls_var(x)           tls__##x
-#endif
-
-#endif