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/* Copyright (C) 2008 The Android Open Source Project
**
** This software is licensed under the terms of the GNU General Public
** License version 2, as published by the Free Software Foundation, and
** may be copied, distributed, and modified under those terms.
**
** 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.
*/
#ifndef _ANDROID_UTILS_SYSTEM_H
#define _ANDROID_UTILS_SYSTEM_H
#include <string.h>
#include <stdint.h>
/* the following functions perform 'checked allocations', i.e.
* they abort if there is not enough memory.
*/
/* checked malloc, only returns NULL if size is 0 */
void* android_alloc( size_t size );
/* checked calloc, only returns NULL if size is 0 */
void* android_alloc0( size_t size );
/* checked realloc, only returns NULL if size if 0 */
void* android_realloc( void* block, size_t size );
/* free memory block */
void android_free( void* block );
/* convenience macros */
#define AZERO(p) memset((char*)(p),0,sizeof(*(p)))
#define ANEW(p) (p = android_alloc(sizeof(*p)))
#define ANEW0(p) (p = android_alloc0(sizeof(*p)))
#define AFREE(p) android_free(p)
#define AMEM_ZERO(dst,size) memset((char*)(dst), 0, (size_t)(size))
#define AMEM_COPY(dst,src,size) memcpy((char*)(dst),(const char*)(src),(size_t)(size))
#define AMEM_MOVE(dst,src,size) memmove((char*)(dst),(const char*)(src),(size_t)(size))
#define AARRAY_NEW(p,count) ((p) = android_alloc(sizeof(*p)*(count)))
#define AARRAY_NEW0(p,count) ((p) = android_alloc0(sizeof(*p)*(count)))
#define AARRAY_RENEW(p,count) ((p) = android_realloc((p),sizeof(*(p))*(count)))
#define AARRAY_COPY(dst,src,count) AMEM_COPY(dst,src,(count)*sizeof((dst)[0]))
#define AARRAY_MOVE(dst,src,count) AMEM_MOVE(dst,src,(count)*sizeof((dst)[0]))
#define AARRAY_ZERO(dst,count) AMEM_ZERO(dst,(count)*sizeof((dst)[0]))
#define AARRAY_STATIC_LEN(a) (sizeof((a))/sizeof((a)[0]))
#define AINLINED static __inline__
/* unlike strdup(), this accepts NULL as valid input (and will return NULL then) */
char* android_strdup(const char* src);
#define ASTRDUP(str) android_strdup(str)
/* used for functions that return a Posix-style status code, i.e.
* 0 means success, -1 means failure with the error code in 'errno'
*/
typedef int APosixStatus;
/* used for functions that return or accept a boolean type */
typedef int ABool;
/** Stringification macro
**/
#ifndef STRINGIFY
#define _STRINGIFY(x) #x
#define STRINGIFY(x) _STRINGIFY(x)
#endif
/** Concatenation macros
**/
#ifndef GLUE
#define _GLUE(x,y) x##y
#define GLUE(x,y) _GLUE(x,y)
#define _GLUE3(x,y,z) x##y##z
#define GLUE3(x,y,z) _GLUE3(x,y,z)
#endif
/** Handle strsep() on Win32
**/
#ifdef _WIN32
# undef strsep
# define strsep win32_strsep
extern char* win32_strsep(char** pline, const char* delim);
#endif
/** Handle strcasecmp on Windows
**/
#ifdef _WIN32
# define strcasecmp stricmp
#endif
/** EINTR HANDLING
**
** since QEMU uses SIGALRM pretty extensively, having a system call returning
** EINTR on Unix happens very frequently. provide a simple macro to guard against
** this.
**/
#ifdef _WIN32
# define CHECKED(ret, call) (ret) = (call)
#else
# define CHECKED(ret, call) do { (ret) = (call); } while ((ret) < 0 && errno == EINTR)
#endif
/** SIGNAL HANDLING
**
** the following can be used to block SIGALRM for a given period of time.
** use with caution, the QEMU execution loop uses SIGALRM extensively
**
**/
#ifdef _WIN32
typedef struct { int dumy; } signal_state_t;
#else
#include <signal.h>
typedef struct { sigset_t old; } signal_state_t;
#endif
extern void disable_sigalrm( signal_state_t *state );
extern void restore_sigalrm( signal_state_t *state );
#ifdef _WIN32
#define BEGIN_NOSIGALRM \
{
#define END_NOSIGALRM \
}
#else /* !WIN32 */
#define BEGIN_NOSIGALRM \
{ signal_state_t __sigalrm_state; \
disable_sigalrm( &__sigalrm_state );
#define END_NOSIGALRM \
restore_sigalrm( &__sigalrm_state ); \
}
#endif /* !WIN32 */
/** TIME HANDLING
**
** sleep for a given time in milliseconds. note: this uses
** disable_sigalrm()/restore_sigalrm()
**/
extern void sleep_ms( int timeout );
/* */
#endif /* _ANDROID_UTILS_SYSTEM_H */
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