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Reduce strcmp() calls in hashtable lookup

This commit is contained in:
Sam Lantinga 2024-09-14 11:46:40 -07:00
parent e673479449
commit 56fc4b790c
1 changed files with 6 additions and 1 deletions
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7
src/SDL_hashtable.c
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@ -294,12 +294,17 @@ Uint32 SDL_HashString(const void *key, void *data)
bool SDL_KeyMatchString(const void *a, const void *b, void *data) bool SDL_KeyMatchString(const void *a, const void *b, void *data)
{ {
const char *a_string = (const char *)a;
const char *b_string = (const char *)b;
if (a == b) { if (a == b) {
return true; // same pointer, must match. return true; // same pointer, must match.
} else if (!a || !b) { } else if (!a || !b) {
return false; // one pointer is NULL (and first test shows they aren't the same pointer), must not match. return false; // one pointer is NULL (and first test shows they aren't the same pointer), must not match.
} else if (a_string[0] != b_string[0]) {
return false; // we know they don't match
} }
return (SDL_strcmp((const char *)a, (const char *)b) == 0); // Check against actual string contents. return (SDL_strcmp(a_string, b_string) == 0); // Check against actual string contents.
} }
// We assume we can fit the ID in the key directly // We assume we can fit the ID in the key directly