test: epoc32/include/stdapis/glib-2.0/glowmem.h@837f303aceeb

     1 /*

     2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 *

    16 */

    19 #ifndef __G_LOW_MEM_H__

    20 #define __G_LOW_MEM_H__

    22 #include <unistd.h>

    23 #include <setjmp.h>

    25 /*-------------------------- Data Structure Decleration ----------------*/

    26 typedef struct _cleanUpStack cleanUpStack ;

    27 typedef struct _mem_info mem_info ;

    29 struct _cleanUpStack

    30 {

    31 	void *ptr[1000];

    32 	int top;

    33 };

    35 struct _mem_info

    36 {

    37 	int is_setjmp_called;

    38 	jmp_buf buf;

    39 	cleanUpStack stack;

    40 };

    43 /*--------------------Function declerations------------------*/

    44 #ifdef __cplusplus

    45 extern "C"

    46 {

    47 #endif    /* __cplusplus */

    49 IMPORT_C mem_info * _get_thread_specific_data();

    50 IMPORT_C int _set_thread_specific_data(mem_info *m);

    51 IMPORT_C int _push(cleanUpStack *cs,void *ptr);

    52 IMPORT_C void *_pop(cleanUpStack *cs);

    53 IMPORT_C void _findAndDestroy(cleanUpStack *cs,void *ptr);

    54 IMPORT_C void _destroCleanUpStack(cleanUpStack *cs);

    55 IMPORT_C void _clearCleanUpStack(cleanUpStack *cs);

    56 IMPORT_C void * _pAlloc(size_t size);

    57 IMPORT_C void _dummy1();

    58 IMPORT_C void _dummy2();

    59 IMPORT_C void _dummy3();

    61 #ifdef __cplusplus

    62 }

    63 #endif    /* __cplusplus */

    65 /*--------------------MACRO declerations------------------*/

    67 #define SET_LOW_MEMORY_TRAP_VOID()	\

    68 gboolean did_i_set = FALSE;\

    69 {\

    70 	mem_info *m = _get_thread_specific_data();\

    71 	if(m == NULL)\

    72 	{\

    73 		m = (mem_info *)_pAlloc(sizeof(mem_info));\

    74 		if(!m)\

    75 			return;\

    76 		m->is_setjmp_called = FALSE;\

    77 		_clearCleanUpStack(&(m->stack));\

    78 		if(_set_thread_specific_data(m))\

    79 			return;\

    80 	}\

    81 	if(!m->is_setjmp_called)\

    82 	{\

    83   		if(setjmp(m->buf) > 0)\

    84   		{\

    85   			m->is_setjmp_called = FALSE;\

    86   			_destroCleanUpStack(&(m->stack));\

    87   			return ;\

    88   		}\

    89   		m->is_setjmp_called = TRUE;\

    90   		did_i_set = TRUE;\

    91   	}\

    92 }

    94 #define SET_LOW_MEMORY_TRAP(failure_value)	\

    95 gboolean did_i_set = FALSE;\

    96 {\

    97 	mem_info *m = _get_thread_specific_data();\

    98 	if(m == NULL)\

    99 	{\

   100 		m = (mem_info *)_pAlloc(sizeof(mem_info));\

   101 		if(!m)\

   102 			return failure_value;\

   103 		m->is_setjmp_called = FALSE;\

   104 		_clearCleanUpStack(&(m->stack));\

   105 		if(_set_thread_specific_data(m))\

   106 			return failure_value;\

   107 	}\

   108 	if(!m->is_setjmp_called)\

   109 	{\

   110   		if(setjmp(m->buf) > 0)\

   111   		{\

   112   			m->is_setjmp_called = FALSE;\

   113   			_destroCleanUpStack(&(m->stack));\

   114   			return failure_value;\

   115   		}\

   116   		m->is_setjmp_called = TRUE;\

   117   		did_i_set = TRUE;\

   118   	}\

   119 }

   122 #define REMOVE_LOW_MEMORY_TRAP()	{\

   123 if(did_i_set)\

   124 	{\

   125 	mem_info *m = _get_thread_specific_data();\

   126 	if(m)\

   127 		m->is_setjmp_called = FALSE;\

   128 		_clearCleanUpStack(&(m->stack));\

   129 	}\

   130 }

   132 #endif /* __G_LOW_MEM_H__ */

author	William Roberts <williamr@symbian.org>
	Wed, 31 Mar 2010 12:33:34 +0100
branch	Symbian3
changeset 4	837f303aceeb
parent 2	2fe1408b6811
permissions	-rw-r--r--