UCL Common Library Reference | |||
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#include <memory.h> #define xmalloc (x) #define xrealloc (p,x) #define xstrdup (str) void xdoneinit (void); void xmemchk (void); void xmemdmp (void); void xclaim (void *addr, const char *filen, int line); void xmemdist ( |
This set of functions is semantically similar functions to standard C library memory allocation routines. When memory debugging is enabled these functions include support to detect buffer overruns. When memory debugging is not enabled the allocation and free calls are wrappers around the standard C allocation routines, and checking routines are null ops.
Memory debugging is enabled when DEBUG_MEM is defined at compilation time. On Unix systems, the configure script has a command-line option --enable-debug-mem. On Win32, a memory debugging is enabled in the debug configuration.
#define xmalloc(x) _xmalloc(x,__FILE__,__LINE__) |
Allocates a block of memory. Semantically equivalent to
#define xrealloc(p,x) _xrealloc(p, x,__FILE__,__LINE__) |
Re-sizes a block of memory. Semantically equivalent to
#define xstrdup(str) _xstrdup(str,__FILE__,__LINE__) |
xmalloc()'s sufficient memory to store str, copies str into it, and
returns pointer to new string. Semantically equivalent to
void xdoneinit (void); |
Marks end of an applications initialization period. For media applications with real-time data transfer it's sometimes helpful to distinguish between memory allocated during application initialization and when application is running.
void xmemchk (void); |
Check for bounds overruns in all memory allocated with xmalloc(), xrealloc(), and xstrdup(). Information on corrupted blocks is rendered on the standard error stream. This includes where the block was allocated, the size of the block, and the number of allocations made since the block was created.
void xclaim (void *addr, const char *filen, int line); |
Coerces information in allocation table about allocation file and
line to be filen and line. This is used by the evil