Preserve ignored error snapshots
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This commit is contained in:
2026-08-04 10:44:46 -04:00
parent 4fe7571329
commit 55090d2419
5 changed files with 51 additions and 23 deletions

View File

@@ -1,7 +1,8 @@
#include "akerror.h"
#include "err_capture.h"
#include <string.h>
/* IGNORE logs and releases an error, then lets execution continue. */
/* IGNORE snapshots and logs an error, releases its pool slot, then continues. */
akerr_ErrorContext *boom(void)
{
@@ -18,10 +19,14 @@ int main(void)
(void)e;
/* More failures than the pool has slots must remain safe: a leaking
* IGNORE used to exhaust the pool and terminate the process here. */
* IGNORE used to exhaust the pool and terminate the process here. The
* copied snapshot must also survive the slot being reused on the next
* iteration. */
for ( int i = 0; i < AKERR_MAX_ARRAY_ERROR + 1; i++ ) {
IGNORE(boom());
AKERR_CHECK(__akerr_last_ignored == NULL);
AKERR_CHECK(__akerr_last_ignored.status == AKERR_VALUE);
AKERR_CHECK(strcmp(__akerr_last_ignored.message,
"this error is ignored on purpose") == 0);
AKERR_CHECK(akerr_slots_in_use() == 0);
}
reached_after_ignore = 1;

View File

@@ -90,6 +90,9 @@ static void one_checkout(akerr_ThreadArg *arg)
static void *pool_body(void *raw)
{
akerr_ThreadArg *arg = raw;
char expected[64];
snprintf(expected, sizeof(expected), "ignored by thread %d", arg->id);
pthread_barrier_wait(arg->barrier);
for ( int i = 0; i < ITERATIONS; i++ ) {
@@ -97,10 +100,21 @@ static void *pool_body(void *raw)
one_checkout(arg);
}
/* IGNORE's scratch pointer is thread-local while logging and cleared after
/* IGNORE's snapshot is thread-local while logging and remains valid after
* release. Concurrent ignored errors must all return their pool slots. */
IGNORE(ignorable(arg));
AKERR_TCHECK(arg, __akerr_last_ignored == NULL);
AKERR_TCHECK(arg, __akerr_last_ignored.status == AKERR_IO);
AKERR_TCHECK(arg, strcmp(__akerr_last_ignored.message, expected) == 0);
/* Reuse a slot after IGNORE and prove that the copied snapshot did not
* become an alias for the newly acquired context. */
akerr_ErrorContext *reused = akerr_next_error();
AKERR_TCHECK(arg, reused != NULL);
if ( reused != NULL ) {
RELEASE_ERROR(reused);
}
AKERR_TCHECK(arg, __akerr_last_ignored.status == AKERR_IO);
AKERR_TCHECK(arg, strcmp(__akerr_last_ignored.message, expected) == 0);
return NULL;
}