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Issue #26588: Optimize tracemalloc_realloc()

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No need to remove the old trace if the memory block didn't move.
This commit is contained in:
Victor Stinner 2016-03-23 09:08:08 +01:00
parent d65e0c7560
commit 42bcf37fcf
1 changed files with 6 additions and 1 deletions
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7
Modules/_tracemalloc.c
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@ -633,7 +633,12 @@ tracemalloc_realloc(void *ctx, void *ptr, size_t new_size)
/* an existing memory block has been resized */ /* an existing memory block has been resized */
TABLES_LOCK(); TABLES_LOCK();
REMOVE_TRACE(ptr);
/* tracemalloc_add_trace() updates the trace if there is already
a trace at address (domain, ptr2) */
if (ptr2 != ptr) {
REMOVE_TRACE(ptr);
}
if (ADD_TRACE(ptr2, new_size) < 0) { if (ADD_TRACE(ptr2, new_size) < 0) {
/* Memory allocation failed. The error cannot be reported to /* Memory allocation failed. The error cannot be reported to