bzr branch
http://suren.me/webbzr/alps/pcitool
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271
by Suren A. Chilingaryan
Prevent excessive calling of getenv by debugging code for better performance |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include "env.h" |
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static const char *pcilib_env_cache[PCILIB_MAX_ENV] = {0}; |
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const char *pcilib_getenv(pcilib_env_t env, const char *var) { |
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if (!pcilib_env_cache[env]) { |
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const char *var_env = getenv(var); |
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pcilib_env_cache[env] = var_env?var_env:(void*)-1; |
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return var_env; |
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}
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return (pcilib_env_cache[env] == (void*)-1)?NULL:pcilib_env_cache[env]; |
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}
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