/usr/include/codeblocks/nsMemory.h is in codeblocks-dev 13.12+dfsg-4.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 | /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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/. */
#ifndef nsMemory_h__
#define nsMemory_h__
//#include "nsXPCOM.h"
//#include "nsIMemory.h"
#define NS_MEMORY_CONTRACTID "@mozilla.org/xpcom/memory-service;1"
#define NS_MEMORY_CLASSNAME "Global Memory Service"
#define NS_MEMORY_CID \
{ /* 30a04e40-38e7-11d4-8cf5-0060b0fc14a3 */ \
0x30a04e40, \
0x38e7, \
0x11d4, \
{0x8c, 0xf5, 0x00, 0x60, 0xb0, 0xfc, 0x14, 0xa3} \
}
/**
* Static helper routines to manage memory. These routines allow easy access
* to xpcom's built-in (global) nsIMemory implementation, without needing
* to go through the service manager to get it. However this requires clients
* to link with the xpcom DLL.
*
* This class is not threadsafe and is intented for use only on the main
* thread.
*/
//class nsMemory
//{
//public:
// static NS_HIDDEN_(void*) Alloc(size_t size)
// { return NS_Alloc(size); }
//
// static NS_HIDDEN_(void*) Realloc(void* ptr, size_t size)
// { return NS_Realloc(ptr, size); }
//
// static NS_HIDDEN_(void) Free(void* ptr)
// { NS_Free(ptr); }
//
// static NS_COM_GLUE nsresult HeapMinimize(bool aImmediate);
// static NS_COM_GLUE void* Clone(const void* ptr, size_t size);
// static NS_COM_GLUE nsIMemory* GetGlobalMemoryService(); // AddRefs
//};
/**
* Macro to free all elements of an XPCOM array of a given size using
* freeFunc, then frees the array itself using nsMemory::Free().
*
* Note that this macro (and its wrappers) can be used to deallocate a
* partially- or completely-built array while unwinding an error
* condition inside the XPCOM routine that was going to return the
* array. For this to work on a partially-built array, your code
* needs to be building the array from index 0 upwards, and simply
* pass the number of elements that have already been built (and thus
* need to be freed) as |size|.
*
* Thanks to <alecf@netscape.com> for suggesting this form, which
* allows the macro to be used with NS_RELEASE / NS_RELEASE_IF in
* addition to nsMemory::Free.
*
* @param size Number of elements in the array. If not a constant, this
* should be a int32_t. Note that this means this macro
* will not work if size >= 2^31.
* @param array The array to be freed.
* @param freeFunc The function or macro to be used to free it.
* For arrays of nsISupports (or any class derived
* from it), NS_IF_RELEASE (or NS_RELEASE) should be
* passed as freeFunc. For most (all?) other pointer
* types (including XPCOM strings and wstrings),
* nsMemory::Free should be used, since the
* shared-allocator (nsMemory) is what will have been
* used to allocate the memory.
*/
#define NS_FREE_XPCOM_POINTER_ARRAY(size, array, freeFunc) \
PR_BEGIN_MACRO \
int32_t iter_ = int32_t(size); \
while (--iter_ >= 0) \
freeFunc((array)[iter_]); \
NS_Free((array)); \
PR_END_MACRO
// convenience macros for commonly used calls. mmmmm. syntactic sugar.
/**
* Macro to free arrays of non-refcounted objects allocated by the
* shared allocator (nsMemory) such as strings and wstrings. A
* convenience wrapper around NS_FREE_XPCOM_POINTER_ARRAY.
*
* @param size Number of elements in the array. If not a constant, this
* should be a int32_t. Note that this means this macro
* will not work if size >= 2^31.
* @param array The array to be freed.
*/
#define NS_FREE_XPCOM_ALLOCATED_POINTER_ARRAY(size, array) \
NS_FREE_XPCOM_POINTER_ARRAY((size), (array), NS_Free)
/**
* Macro to free an array of pointers to nsISupports (or classes
* derived from it). A convenience wrapper around
* NS_FREE_XPCOM_POINTER_ARRAY.
*
* Note that if you know that none of your nsISupports pointers are
* going to be 0, you can gain a bit of speed by calling
* NS_FREE_XPCOM_POINTER_ARRAY directly and using NS_RELEASE as your
* free function.
*
* @param size Number of elements in the array. If not a constant, this
* should be a int32_t. Note that this means this macro
* will not work if size >= 2^31.
* @param array The array to be freed.
*/
#define NS_FREE_XPCOM_ISUPPORTS_POINTER_ARRAY(size, array) \
NS_FREE_XPCOM_POINTER_ARRAY((size), (array), NS_IF_RELEASE)
/**
* Helpful array length function for calculating the length of a
* statically declared array.
*/
#define NS_ARRAY_LENGTH(array_) \
(sizeof(array_)/sizeof(array_[0]))
/**
* A macro, NS_ALIGNMENT_OF(t_) that determines the alignment
* requirements of a type.
*/
namespace mozilla {
template <class T>
struct AlignmentTestStruct
{
char c;
T t;
};
}
#define NS_ALIGNMENT_OF(t_) \
(sizeof(mozilla::AlignmentTestStruct<t_>) - sizeof(t_))
/**
* An enumeration type used to represent a method of assignment.
*/
enum nsAssignmentType {
NS_ASSIGNMENT_COPY, // copy by value
NS_ASSIGNMENT_DEPEND, // copy by reference
NS_ASSIGNMENT_ADOPT // copy by reference (take ownership of resource)
};
#endif // nsMemory_h__
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