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author | Michael Brown | 2007-01-18 13:54:18 +0100 |
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committer | Michael Brown | 2007-01-18 13:54:18 +0100 |
commit | 35776f481c02caa700369db0e884bd9f7c7d3c0e (patch) | |
tree | 1deb52c624ab9bf9c56f5c26520d198a29e228f0 /src/include/stdlib.h | |
parent | Switch from calloc() to malloc()+memset() to match the practices used (diff) | |
download | ipxe-35776f481c02caa700369db0e884bd9f7c7d3c0e.tar.gz ipxe-35776f481c02caa700369db0e884bd9f7c7d3c0e.tar.xz ipxe-35776f481c02caa700369db0e884bd9f7c7d3c0e.zip |
Don't always zero memory in malloc(). This saves around 2us on a
full-length PKB allocation.
Diffstat (limited to 'src/include/stdlib.h')
-rw-r--r-- | src/include/stdlib.h | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/src/include/stdlib.h b/src/include/stdlib.h index 2b6471e1..39ad831f 100644 --- a/src/include/stdlib.h +++ b/src/include/stdlib.h @@ -8,6 +8,8 @@ extern void free ( void *ptr ); extern int system ( const char *command ); extern long int random ( void ); +extern void * _calloc ( size_t len ); + /** * Allocate cleared memory * @@ -17,12 +19,12 @@ extern long int random ( void ); * * Allocate memory as per malloc(), and zero it. * - * Note that malloc() and calloc() are identical, in the interests of - * reducing code size. Callers should not, however, rely on malloc() - * clearing memory, since this behaviour may change in future. + * This is implemented as a static inline, with the body of the + * function in _calloc(), since in most cases @c nmemb will be 1 and + * doing the multiply is just wasteful. */ static inline void * calloc ( size_t nmemb, size_t size ) { - return malloc ( nmemb * size ); + return _calloc ( nmemb * size ); } #endif /* STDLIB_H */ |