diff options
Diffstat (limited to 'include/iprt/mem.h')
| -rw-r--r-- | include/iprt/mem.h | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/include/iprt/mem.h b/include/iprt/mem.h index 883de0fe..9b868065 100644 --- a/include/iprt/mem.h +++ b/include/iprt/mem.h @@ -3,7 +3,7 @@ */ /* - * Copyright (C) 2006-2011 Oracle Corporation + * Copyright (C) 2006-2012 Oracle Corporation * * This file is part of VirtualBox Open Source Edition (OSE), as * available from http://www.virtualbox.org. This file is free software; @@ -313,8 +313,16 @@ RTDECL(void) RTMemFree(void *pv) RT_NO_THROW; /** Allocate and free from any context. * Will return VERR_NOT_SUPPORTED if not supported. */ #define RTMEMALLOCEX_FLAGS_ANY_CTX (RTMEMALLOCEX_FLAGS_ANY_CTX_ALLOC | RTMEMALLOCEX_FLAGS_ANY_CTX_FREE) +/** Reachable by 16-bit address. + * Will return VERR_NOT_SUPPORTED if not supported. */ +#define RTMEMALLOCEX_FLAGS_16BIT_REACH RT_BIT(4) +/** Reachable by 32-bit address. + * Will return VERR_NOT_SUPPORTED if not supported. */ +#define RTMEMALLOCEX_FLAGS_32BIT_REACH RT_BIT(5) /** Mask of valid flags. */ -#define RTMEMALLOCEX_FLAGS_VALID_MASK UINT32_C(0x0000000f) +#define RTMEMALLOCEX_FLAGS_VALID_MASK UINT32_C(0x0000003f) +/** Mask of valid flags for ring-0. */ +#define RTMEMALLOCEX_FLAGS_VALID_MASK_R0 UINT32_C(0x0000000f) /** @} */ /** @@ -337,6 +345,9 @@ RTDECL(void) RTMemFree(void *pv) RT_NO_THROW; /** * Extended heap allocation API, custom tag. * + * Depending on the implementation, using this function may add extra overhead, + * so use the simpler APIs where ever possible. + * * @returns IPRT status code. * @retval VERR_NO_MEMORY if we're out of memory. * @retval VERR_NO_EXEC_MEMORY if we're out of executable memory. @@ -357,6 +368,11 @@ RTDECL(int) RTMemAllocExTag(size_t cb, size_t cbAlignment, uint32_t fFlags, cons * * @param pv What to free, NULL is fine. * @param cb The amount of allocated memory. + * @param fFlags The flags specified when allocating the memory. + * Whether the exact flags are requires depends on + * the implementation, but in general, ring-0 + * doesn't require anything while ring-3 requires + * RTMEMALLOCEX_FLAGS_EXEC if used. */ RTDECL(void) RTMemFreeEx(void *pv, size_t cb) RT_NO_THROW; |