diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/gos/chibios.h | 1 | ||||
| -rw-r--r-- | include/gos/gos.h | 20 | ||||
| -rw-r--r-- | include/gos/win32.h | 1 |
3 files changed, 22 insertions, 0 deletions
diff --git a/include/gos/chibios.h b/include/gos/chibios.h index 5193d506..cfbc049e 100644 --- a/include/gos/chibios.h +++ b/include/gos/chibios.h @@ -76,6 +76,7 @@ extern "C" { #define gfxMutexDestroy(pmutex) {} #define gfxMutexEnter(pmutex) chMtxLock(pmutex) #define gfxMutexExit(pmutex) chMtxUnlock() +void *gfxRealloc(void *ptr, size_t oldsz, size_t newsz); void gfxSleepMilliseconds(delaytime_t ms); void gfxSleepMicroseconds(delaytime_t ms); void gfxSemInit(gfxSem *psem, semcount_t val, semcount_t limit); diff --git a/include/gos/gos.h b/include/gos/gos.h index fe45ce60..84a2fd0a 100644 --- a/include/gos/gos.h +++ b/include/gos/gos.h @@ -128,6 +128,26 @@ void *gfxAlloc(size_t sz); /** + * @brief Re-allocate memory + * @return A pointer to the new memory area or NULL if there is no more memory available + * + * @param[in] ptr The old memory area to be increased/decreased in size + * @param[in] oldsz The size in bytes of the old memory area + * @param[in] newsz The size in bytes of the new memory area + * + * @note Some operating systems don't use the oldsz parameter as they implicitly know the size of + * old memory area. The parameter must always be supplied however for API compatibility. + * @note gfxRealloc() can make the area smaller or larger but may have to return a different pointer. + * If this occurs the new area contains a copy of the data from the old area. The old memory + * pointer should not be used after this routine as the original area may have been freed. + * @note If there is insufficient memory to create the new memory region, NULL is returned and the + * old memory area is left unchanged. + * + * @api + */ + void *gfxRealloc(void *ptr, size_t oldsz, size_t newsz); + + /** * @brief Free memory * * @param[in] ptr The memory to free diff --git a/include/gos/win32.h b/include/gos/win32.h index fbb45d9b..a8dd6d6f 100644 --- a/include/gos/win32.h +++ b/include/gos/win32.h @@ -55,6 +55,7 @@ typedef HANDLE gfxThreadHandle; #define gfxExit() ExitProcess(0) #define gfxAlloc(sz) malloc(sz) +#define gfxRealloc(p,osz,nsz) realloc(p, nsz) #define gfxFree(ptr) free(ptr) #define gfxSleepMilliseconds(ms) Sleep(ms) #define gfxYield() Sleep(0) |