Index: mozilla/nsprpub/pr/include/pratom.h |
=================================================================== |
--- mozilla/nsprpub/pr/include/pratom.h (revision 191424) |
+++ mozilla/nsprpub/pr/include/pratom.h (working copy) |
@@ -1,199 +0,0 @@ |
-/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
-/* This Source Code Form is subject to the terms of the Mozilla Public |
- * License, v. 2.0. If a copy of the MPL was not distributed with this |
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
- |
-/* GLOBAL FUNCTIONS: |
-** DESCRIPTION: |
-** PR Atomic operations |
-*/ |
- |
-#ifndef pratom_h___ |
-#define pratom_h___ |
- |
-#include "prtypes.h" |
-#include "prlock.h" |
- |
-PR_BEGIN_EXTERN_C |
- |
-/* |
-** FUNCTION: PR_AtomicIncrement |
-** DESCRIPTION: |
-** Atomically increment a 32 bit value. |
-** INPUTS: |
-** val: a pointer to the value to increment |
-** RETURN: |
-** the returned value is the result of the increment |
-*/ |
-NSPR_API(PRInt32) PR_AtomicIncrement(PRInt32 *val); |
- |
-/* |
-** FUNCTION: PR_AtomicDecrement |
-** DESCRIPTION: |
-** Atomically decrement a 32 bit value. |
-** INPUTS: |
-** val: a pointer to the value to decrement |
-** RETURN: |
-** the returned value is the result of the decrement |
-*/ |
-NSPR_API(PRInt32) PR_AtomicDecrement(PRInt32 *val); |
- |
-/* |
-** FUNCTION: PR_AtomicSet |
-** DESCRIPTION: |
-** Atomically set a 32 bit value. |
-** INPUTS: |
-** val: A pointer to a 32 bit value to be set |
-** newval: The newvalue to assign to val |
-** RETURN: |
-** Returns the prior value |
-*/ |
-NSPR_API(PRInt32) PR_AtomicSet(PRInt32 *val, PRInt32 newval); |
- |
-/* |
-** FUNCTION: PR_AtomicAdd |
-** DESCRIPTION: |
-** Atomically add a 32 bit value. |
-** INPUTS: |
-** ptr: a pointer to the value to increment |
-** val: value to be added |
-** RETURN: |
-** the returned value is the result of the addition |
-*/ |
-NSPR_API(PRInt32) PR_AtomicAdd(PRInt32 *ptr, PRInt32 val); |
- |
-/* |
-** MACRO: PR_ATOMIC_INCREMENT |
-** MACRO: PR_ATOMIC_DECREMENT |
-** MACRO: PR_ATOMIC_SET |
-** MACRO: PR_ATOMIC_ADD |
-** DESCRIPTION: |
-** Macro versions of the atomic operations. They may be implemented |
-** as compiler intrinsics. |
-** |
-** IMPORTANT NOTE TO NSPR MAINTAINERS: |
-** Implement these macros with compiler intrinsics only on platforms |
-** where the PR_AtomicXXX functions are truly atomic (i.e., where the |
-** configuration macro _PR_HAVE_ATOMIC_OPS is defined). Otherwise, |
-** the macros and functions won't be compatible and can't be used |
-** interchangeably. |
-*/ |
-#if defined(_WIN32) && !defined(_WIN32_WCE) && \ |
- (!defined(_MSC_VER) || (_MSC_VER >= 1310)) |
- |
-long __cdecl _InterlockedIncrement(long volatile *Addend); |
-long __cdecl _InterlockedDecrement(long volatile *Addend); |
-long __cdecl _InterlockedExchange(long volatile *Target, long Value); |
-long __cdecl _InterlockedExchangeAdd(long volatile *Addend, long Value); |
- |
-#ifdef _MSC_VER |
-#pragma intrinsic(_InterlockedIncrement) |
-#pragma intrinsic(_InterlockedDecrement) |
-#pragma intrinsic(_InterlockedExchange) |
-#pragma intrinsic(_InterlockedExchangeAdd) |
-#endif |
- |
-#define PR_ATOMIC_INCREMENT(val) _InterlockedIncrement((long volatile *)(val)) |
-#define PR_ATOMIC_DECREMENT(val) _InterlockedDecrement((long volatile *)(val)) |
-#define PR_ATOMIC_SET(val, newval) \ |
- _InterlockedExchange((long volatile *)(val), (long)(newval)) |
-#define PR_ATOMIC_ADD(ptr, val) \ |
- (_InterlockedExchangeAdd((long volatile *)(ptr), (long)(val)) + (val)) |
- |
-#elif ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1)) && \ |
- ((defined(__APPLE__) && \ |
- (defined(__ppc__) || defined(__i386__) || defined(__x86_64__))) || \ |
- (defined(__linux__) && \ |
- ((defined(__i386__) && \ |
- defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4)) || \ |
- defined(__ia64__) || defined(__x86_64__) || \ |
- (defined(__powerpc__) && !defined(__powerpc64__)) || \ |
- (defined(__arm__) && \ |
- defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4)) || \ |
- defined(__alpha)))) |
- |
-/* |
- * Because the GCC manual warns that some processors may support |
- * reduced functionality of __sync_lock_test_and_set, we test for the |
- * processors that we believe support a full atomic exchange operation. |
- */ |
- |
-#define PR_ATOMIC_INCREMENT(val) __sync_add_and_fetch(val, 1) |
-#define PR_ATOMIC_DECREMENT(val) __sync_sub_and_fetch(val, 1) |
-#define PR_ATOMIC_SET(val, newval) __sync_lock_test_and_set(val, newval) |
-#define PR_ATOMIC_ADD(ptr, val) __sync_add_and_fetch(ptr, val) |
- |
-#else |
- |
-#define PR_ATOMIC_INCREMENT(val) PR_AtomicIncrement(val) |
-#define PR_ATOMIC_DECREMENT(val) PR_AtomicDecrement(val) |
-#define PR_ATOMIC_SET(val, newval) PR_AtomicSet(val, newval) |
-#define PR_ATOMIC_ADD(ptr, val) PR_AtomicAdd(ptr, val) |
- |
-#endif |
- |
-/* |
-** LIFO linked-list (stack) |
-*/ |
-typedef struct PRStackElemStr PRStackElem; |
- |
-struct PRStackElemStr { |
- PRStackElem *prstk_elem_next; /* next pointer MUST be at offset 0; |
- assembly language code relies on this */ |
-}; |
- |
-typedef struct PRStackStr PRStack; |
- |
-/* |
-** FUNCTION: PR_CreateStack |
-** DESCRIPTION: |
-** Create a stack, a LIFO linked list |
-** INPUTS: |
-** stack_name: a pointer to string containing the name of the stack |
-** RETURN: |
-** A pointer to the created stack, if successful, else NULL. |
-*/ |
-NSPR_API(PRStack *) PR_CreateStack(const char *stack_name); |
- |
-/* |
-** FUNCTION: PR_StackPush |
-** DESCRIPTION: |
-** Push an element on the top of the stack |
-** INPUTS: |
-** stack: pointer to the stack |
-** stack_elem: pointer to the stack element |
-** RETURN: |
-** None |
-*/ |
-NSPR_API(void) PR_StackPush(PRStack *stack, PRStackElem *stack_elem); |
- |
-/* |
-** FUNCTION: PR_StackPop |
-** DESCRIPTION: |
-** Remove the element on the top of the stack |
-** INPUTS: |
-** stack: pointer to the stack |
-** RETURN: |
-** A pointer to the stack element removed from the top of the stack, |
-** if non-empty, |
-** else NULL |
-*/ |
-NSPR_API(PRStackElem *) PR_StackPop(PRStack *stack); |
- |
-/* |
-** FUNCTION: PR_DestroyStack |
-** DESCRIPTION: |
-** Destroy the stack |
-** INPUTS: |
-** stack: pointer to the stack |
-** RETURN: |
-** PR_SUCCESS - if successfully deleted |
-** PR_FAILURE - if the stack is not empty |
-** PR_GetError will return |
-** PR_INVALID_STATE_ERROR - stack is not empty |
-*/ |
-NSPR_API(PRStatus) PR_DestroyStack(PRStack *stack); |
- |
-PR_END_EXTERN_C |
- |
-#endif /* pratom_h___ */ |