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authorEdward Thomson <ethomson@edwardthomson.com>2020-12-05 15:57:48 +0000
committerEdward Thomson <ethomson@edwardthomson.com>2020-12-06 01:08:22 +0000
commit404dd02443aebed284033e02ace8b791151aa7a9 (patch)
tree7102a446d3c1a8c2f9812f68d87a51416bd8f9cc /src/thread-utils.h
parentab7729747c4b55a93b8973e94429c747fe274529 (diff)
downloadlibgit2-404dd02443aebed284033e02ace8b791151aa7a9.tar.gz
threads: rename thread files to thread.[ch]
Diffstat (limited to 'src/thread-utils.h')
-rw-r--r--src/thread-utils.h370
1 files changed, 0 insertions, 370 deletions
diff --git a/src/thread-utils.h b/src/thread-utils.h
deleted file mode 100644
index 9b511b650..000000000
--- a/src/thread-utils.h
+++ /dev/null
@@ -1,370 +0,0 @@
-/*
- * Copyright (C) the libgit2 contributors. All rights reserved.
- *
- * This file is part of libgit2, distributed under the GNU GPL v2 with
- * a Linking Exception. For full terms see the included COPYING file.
- */
-#ifndef INCLUDE_thread_utils_h__
-#define INCLUDE_thread_utils_h__
-
-#if defined(GIT_THREADS)
-
-#if defined(__clang__)
-
-# if (__clang_major__ < 3 || (__clang_major__ == 3 && __clang_minor__ < 1))
-# error Atomic primitives do not exist on this version of clang; configure libgit2 with -DTHREADSAFE=OFF
-# else
-# define GIT_BUILTIN_ATOMIC
-# endif
-
-#elif defined(__GNUC__)
-
-# if (__GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 1))
-# error Atomic primitives do not exist on this version of gcc; configure libgit2 with -DTHREADSAFE=OFF
-# elif (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 7))
-# define GIT_BUILTIN_ATOMIC
-# else
-# define GIT_BUILTIN_SYNC
-# endif
-
-#endif
-
-#endif /* GIT_THREADS */
-
-/* Common operations even if threading has been disabled */
-typedef struct {
-#if defined(GIT_WIN32)
- volatile long val;
-#else
- volatile int val;
-#endif
-} git_atomic32;
-
-#ifdef GIT_ARCH_64
-
-typedef struct {
-#if defined(GIT_WIN32)
- volatile __int64 val;
-#else
- volatile int64_t val;
-#endif
-} git_atomic64;
-
-typedef git_atomic64 git_atomic_ssize;
-
-#define git_atomic_ssize_set git_atomic64_set
-#define git_atomic_ssize_add git_atomic64_add
-#define git_atomic_ssize_get git_atomic64_get
-
-#else
-
-typedef git_atomic32 git_atomic_ssize;
-
-#define git_atomic_ssize_set git_atomic32_set
-#define git_atomic_ssize_add git_atomic32_add
-#define git_atomic_ssize_get git_atomic32_get
-
-#endif
-
-#ifdef GIT_THREADS
-
-#ifdef GIT_WIN32
-# include "win32/thread.h"
-#else
-# include "unix/pthread.h"
-#endif
-
-GIT_INLINE(void) git_atomic32_set(git_atomic32 *a, int val)
-{
-#if defined(GIT_WIN32)
- InterlockedExchange(&a->val, (LONG)val);
-#elif defined(GIT_BUILTIN_ATOMIC)
- __atomic_store_n(&a->val, val, __ATOMIC_SEQ_CST);
-#elif defined(GIT_BUILTIN_SYNC)
- __sync_lock_test_and_set(&a->val, val);
-#else
-# error "Unsupported architecture for atomic operations"
-#endif
-}
-
-GIT_INLINE(int) git_atomic32_inc(git_atomic32 *a)
-{
-#if defined(GIT_WIN32)
- return InterlockedIncrement(&a->val);
-#elif defined(GIT_BUILTIN_ATOMIC)
- return __atomic_add_fetch(&a->val, 1, __ATOMIC_SEQ_CST);
-#elif defined(GIT_BUILTIN_SYNC)
- return __sync_add_and_fetch(&a->val, 1);
-#else
-# error "Unsupported architecture for atomic operations"
-#endif
-}
-
-GIT_INLINE(int) git_atomic32_add(git_atomic32 *a, int32_t addend)
-{
-#if defined(GIT_WIN32)
- return InterlockedExchangeAdd(&a->val, addend);
-#elif defined(GIT_BUILTIN_ATOMIC)
- return __atomic_add_fetch(&a->val, addend, __ATOMIC_SEQ_CST);
-#elif defined(GIT_BUILTIN_SYNC)
- return __sync_add_and_fetch(&a->val, addend);
-#else
-# error "Unsupported architecture for atomic operations"
-#endif
-}
-
-GIT_INLINE(int) git_atomic32_dec(git_atomic32 *a)
-{
-#if defined(GIT_WIN32)
- return InterlockedDecrement(&a->val);
-#elif defined(GIT_BUILTIN_ATOMIC)
- return __atomic_sub_fetch(&a->val, 1, __ATOMIC_SEQ_CST);
-#elif defined(GIT_BUILTIN_SYNC)
- return __sync_sub_and_fetch(&a->val, 1);
-#else
-# error "Unsupported architecture for atomic operations"
-#endif
-}
-
-GIT_INLINE(int) git_atomic32_get(git_atomic32 *a)
-{
-#if defined(GIT_WIN32)
- return (int)InterlockedCompareExchange(&a->val, 0, 0);
-#elif defined(GIT_BUILTIN_ATOMIC)
- return __atomic_load_n(&a->val, __ATOMIC_SEQ_CST);
-#elif defined(GIT_BUILTIN_SYNC)
- return __sync_val_compare_and_swap(&a->val, 0, 0);
-#else
-# error "Unsupported architecture for atomic operations"
-#endif
-}
-
-GIT_INLINE(void *) git_atomic__compare_and_swap(
- void * volatile *ptr, void *oldval, void *newval)
-{
-#if defined(GIT_WIN32)
- volatile void *foundval;
- foundval = InterlockedCompareExchangePointer((volatile PVOID *)ptr, newval, oldval);
- return (foundval == oldval) ? oldval : newval;
-#elif defined(GIT_BUILTIN_ATOMIC)
- bool success = __atomic_compare_exchange(ptr, &oldval, &newval, false, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST);
- return success ? oldval : newval;
-#elif defined(GIT_BUILTIN_SYNC)
- volatile void *foundval;
- foundval = __sync_val_compare_and_swap(ptr, oldval, newval);
- return (foundval == oldval) ? oldval : newval;
-#else
-# error "Unsupported architecture for atomic operations"
-#endif
-}
-
-GIT_INLINE(volatile void *) git_atomic__swap(
- void * volatile *ptr, void *newval)
-{
-#if defined(GIT_WIN32)
- return InterlockedExchangePointer(ptr, newval);
-#elif defined(GIT_BUILTIN_ATOMIC)
- void * volatile foundval;
- __atomic_exchange(ptr, &newval, &foundval, __ATOMIC_SEQ_CST);
- return foundval;
-#elif defined(GIT_BUILTIN_SYNC)
- return __sync_lock_test_and_set(ptr, newval);
-#else
-# error "Unsupported architecture for atomic operations"
-#endif
-}
-
-GIT_INLINE(volatile void *) git_atomic__load(void * volatile *ptr)
-{
-#if defined(GIT_WIN32)
- void *newval = NULL, *oldval = NULL;
- volatile void *foundval = NULL;
- foundval = InterlockedCompareExchangePointer((volatile PVOID *)ptr, newval, oldval);
- return foundval;
-#elif defined(GIT_BUILTIN_ATOMIC)
- return (volatile void *)__atomic_load_n(ptr, __ATOMIC_SEQ_CST);
-#elif defined(GIT_BUILTIN_SYNC)
- return (volatile void *)__sync_val_compare_and_swap(ptr, 0, 0);
-#else
-# error "Unsupported architecture for atomic operations"
-#endif
-}
-
-#ifdef GIT_ARCH_64
-
-GIT_INLINE(int64_t) git_atomic64_add(git_atomic64 *a, int64_t addend)
-{
-#if defined(GIT_WIN32)
- return InterlockedExchangeAdd64(&a->val, addend);
-#elif defined(GIT_BUILTIN_ATOMIC)
- return __atomic_add_fetch(&a->val, addend, __ATOMIC_SEQ_CST);
-#elif defined(GIT_BUILTIN_SYNC)
- return __sync_add_and_fetch(&a->val, addend);
-#else
-# error "Unsupported architecture for atomic operations"
-#endif
-}
-
-GIT_INLINE(void) git_atomic64_set(git_atomic64 *a, int64_t val)
-{
-#if defined(GIT_WIN32)
- InterlockedExchange64(&a->val, val);
-#elif defined(GIT_BUILTIN_ATOMIC)
- __atomic_store_n(&a->val, val, __ATOMIC_SEQ_CST);
-#elif defined(GIT_BUILTIN_SYNC)
- __sync_lock_test_and_set(&a->val, val);
-#else
-# error "Unsupported architecture for atomic operations"
-#endif
-}
-
-GIT_INLINE(int64_t) git_atomic64_get(git_atomic64 *a)
-{
-#if defined(GIT_WIN32)
- return (int64_t)InterlockedCompareExchange64(&a->val, 0, 0);
-#elif defined(GIT_BUILTIN_ATOMIC)
- return __atomic_load_n(&a->val, __ATOMIC_SEQ_CST);
-#elif defined(GIT_BUILTIN_SYNC)
- return __sync_val_compare_and_swap(&a->val, 0, 0);
-#else
-# error "Unsupported architecture for atomic operations"
-#endif
-}
-
-#endif
-
-#else
-
-#define git_threads_global_init git__noop
-
-#define git_thread unsigned int
-#define git_thread_create(thread, start_routine, arg) git__noop()
-#define git_thread_join(id, status) git__noop()
-
-/* Pthreads Mutex */
-#define git_mutex unsigned int
-#define git_mutex_init(a) git__noop()
-#define git_mutex_init(a) git__noop()
-#define git_mutex_lock(a) git__noop()
-#define git_mutex_unlock(a) git__noop()
-#define git_mutex_free(a) git__noop()
-
-/* Pthreads condition vars */
-#define git_cond unsigned int
-#define git_cond_init(c) git__noop()
-#define git_cond_free(c) git__noop()
-#define git_cond_wait(c, l) git__noop()
-#define git_cond_signal(c) git__noop()
-#define git_cond_broadcast(c) git__noop()
-
-/* Pthreads rwlock */
-#define git_rwlock unsigned int
-#define git_rwlock_init(a) git__noop()
-#define git_rwlock_rdlock(a) git__noop()
-#define git_rwlock_rdunlock(a) git__noop()
-#define git_rwlock_wrlock(a) git__noop()
-#define git_rwlock_wrunlock(a) git__noop()
-#define git_rwlock_free(a) git__noop()
-#define GIT_RWLOCK_STATIC_INIT 0
-
-
-GIT_INLINE(void) git_atomic32_set(git_atomic32 *a, int val)
-{
- a->val = val;
-}
-
-GIT_INLINE(int) git_atomic32_inc(git_atomic32 *a)
-{
- return ++a->val;
-}
-
-GIT_INLINE(int) git_atomic32_add(git_atomic32 *a, int32_t addend)
-{
- a->val += addend;
- return a->val;
-}
-
-GIT_INLINE(int) git_atomic32_dec(git_atomic32 *a)
-{
- return --a->val;
-}
-
-GIT_INLINE(int) git_atomic32_get(git_atomic32 *a)
-{
- return (int)a->val;
-}
-
-GIT_INLINE(void *) git_atomic__compare_and_swap(
- void * volatile *ptr, void *oldval, void *newval)
-{
- if (*ptr == oldval)
- *ptr = newval;
- else
- oldval = newval;
- return oldval;
-}
-
-GIT_INLINE(volatile void *) git_atomic__swap(
- void * volatile *ptr, void *newval)
-{
- volatile void *old = *ptr;
- *ptr = newval;
- return old;
-}
-
-GIT_INLINE(volatile void *) git_atomic__load(void * volatile *ptr)
-{
- return *ptr;
-}
-
-#ifdef GIT_ARCH_64
-
-GIT_INLINE(int64_t) git_atomic64_add(git_atomic64 *a, int64_t addend)
-{
- a->val += addend;
- return a->val;
-}
-
-GIT_INLINE(void) git_atomic64_set(git_atomic64 *a, int64_t val)
-{
- a->val = val;
-}
-
-GIT_INLINE(int64_t) git_atomic64_get(git_atomic64 *a)
-{
- return (int64_t)a->val;
-}
-
-#endif
-
-#endif
-
-/* Atomically replace oldval with newval
- * @return oldval if it was replaced or newval if it was not
- */
-#define git_atomic_compare_and_swap(P,O,N) \
- git_atomic__compare_and_swap((void * volatile *)P, O, N)
-
-#define git_atomic_swap(ptr, val) \
- (void *)git_atomic__swap((void * volatile *)&ptr, val)
-
-#define git_atomic_load(ptr) \
- (void *)git_atomic__load((void * volatile *)&ptr)
-
-#if defined(GIT_THREADS)
-
-# if defined(GIT_WIN32)
-# define GIT_MEMORY_BARRIER MemoryBarrier()
-# elif defined(GIT_BUILTIN_ATOMIC)
-# define GIT_MEMORY_BARRIER __atomic_thread_fence(__ATOMIC_SEQ_CST)
-# elif defined(GIT_BUILTIN_SYNC)
-# define GIT_MEMORY_BARRIER __sync_synchronize()
-# endif
-
-#else
-
-# define GIT_MEMORY_BARRIER /* noop */
-
-#endif
-
-#endif