diff options
Diffstat (limited to 'dom/media/webrtc/transport/third_party/nrappkit/src/util/libekr/r_memory.c')
| -rw-r--r-- | dom/media/webrtc/transport/third_party/nrappkit/src/util/libekr/r_memory.c | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/dom/media/webrtc/transport/third_party/nrappkit/src/util/libekr/r_memory.c b/dom/media/webrtc/transport/third_party/nrappkit/src/util/libekr/r_memory.c new file mode 100644 index 0000000000..53846fc019 --- /dev/null +++ b/dom/media/webrtc/transport/third_party/nrappkit/src/util/libekr/r_memory.c @@ -0,0 +1,198 @@ +/** + r_memory.c + + + Copyright (C) 2004, Network Resonance, Inc. + Copyright (C) 2006, Network Resonance, Inc. + All Rights Reserved + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions + are met: + + 1. Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + 3. Neither the name of Network Resonance, Inc. nor the name of any + contributors to this software may be used to endorse or promote + products derived from this software without specific prior written + permission. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + POSSIBILITY OF SUCH DAMAGE. + + + ekr@rtfm.com Thu Apr 22 20:40:45 2004 + */ + +#include <string.h> +#include <stddef.h> +#include <assert.h> +#include "r_common.h" +#include "r_memory.h" + +typedef struct r_malloc_chunk_ { +#ifdef SANITY_CHECKS + UINT4 hdr; +#endif + UCHAR type; + UINT4 size; + UCHAR memory[1]; +} r_malloc_chunk; + +#define CHUNK_MEMORY_OFFSET offsetof(struct r_malloc_chunk_, memory) +#define GET_CHUNK_ADDR_FROM_MEM_ADDR(memp) \ + ((struct r_malloc_chunk *)(((unsigned char*)(memp))-CHUNK_MEMORY_OFFSET)) +#define CHUNK_SIZE(size) (size+sizeof(r_malloc_chunk)) + +#define HDR_FLAG 0x464c4147 + +static UINT4 mem_usage; /* Includes our header */ +static UINT4 mem_stats[256]; /* Does not include our header */ + +void *r_malloc(type,size) + int type; + size_t size; + { + size_t total; + r_malloc_chunk *chunk; + + total=size+sizeof(r_malloc_chunk); + + if(!(chunk=malloc(total))) + return(0); + +#ifdef SANITY_CHECKS + chunk->hdr=HDR_FLAG; +#endif + chunk->type=type; + chunk->size=size; + + mem_usage+=CHUNK_SIZE(size); + mem_stats[type]+=size; + + return(chunk->memory); + } + +void *r_calloc(type,number,size) + int type; + size_t number; + size_t size; + { + void *ret; + size_t total; + + total=number*size; + + if(!(ret=r_malloc(type,total))) + return(0); + + memset(ret,0,size); + + return(ret); + } + +void r_free(ptr) + void *ptr; + { + r_malloc_chunk *chunk; + + if(!ptr) return; + + chunk=(r_malloc_chunk *)GET_CHUNK_ADDR_FROM_MEM_ADDR(ptr); +#ifdef SANITY_CHECKS + assert(chunk->hdr==HDR_FLAG); +#endif + + mem_usage-=CHUNK_SIZE(chunk->size); + mem_stats[chunk->type]-=chunk->size; + + free(chunk); + } + +void *r_realloc(ptr,size) + void *ptr; + size_t size; + { + r_malloc_chunk *chunk,*nchunk; + size_t total; + + if(!ptr) return(r_malloc(255,size)); + + chunk=(r_malloc_chunk *)GET_CHUNK_ADDR_FROM_MEM_ADDR(ptr); +#ifdef SANITY_CHECKS + assert(chunk->hdr==HDR_FLAG); +#endif + + total=size + sizeof(r_malloc_chunk); + + if(!(nchunk=realloc(chunk,total))) + return(0); + + mem_usage-=CHUNK_SIZE(nchunk->size); + mem_stats[nchunk->type]-=nchunk->size; + + nchunk->size=size; + mem_usage+=CHUNK_SIZE(nchunk->size); + mem_stats[nchunk->type]+=nchunk->size; + + return(nchunk->memory); + } + +char *r_strdup(str) + const char *str; + { + int len; + char *nstr; + + if(!str) + return(0); + + len=strlen(str)+1; + + if(!(nstr=r_malloc(0,len))) + return(0); + + memcpy(nstr,str,len); + + return(nstr); + } + +int r_mem_get_usage(usagep) + UINT4 *usagep; + { + *usagep=mem_usage; + + return(0); + } + +int r_memory_dump_stats() + { + int i; + + printf("Total memory usage: %d\n",mem_usage); + printf("Memory usage by bucket\n"); + for(i=0;i<256;i++){ + if(mem_stats[i]){ + printf("%d\t%d\n",i,mem_stats[i]); + } + } + return(0); + } + +void *r_malloc_compat(size) + size_t size; + { + return(r_malloc(255,size)); + } |