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Use a local limiter if shared memory fails to allocate #3454

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Use a local limiter if shared memory fails to allocate #3454

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14 changes: 8 additions & 6 deletions ext/standalone_limiter.c
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Original file line number Diff line number Diff line change
Expand Up @@ -22,18 +22,20 @@ typedef struct {

static ddog_MappedMem_ShmHandle *dd_limiter_mapped_shm;
static ddtrace_standalone_limiter *dd_limiter;
static ddtrace_standalone_limiter dd_local_limiter;

void ddtrace_standalone_limiter_create() {
uint32_t limit = 1;

ddog_ShmHandle *shm;
if (!ddtrace_ffi_try("Failed allocating shared memory", ddog_alloc_anon_shm_handle(limit, &shm))) {
return;
}
size_t _size;
if (!ddtrace_ffi_try("Failed mapping shared memory", ddog_map_shm(shm, &dd_limiter_mapped_shm, (void **)&dd_limiter, &_size))) {
ddog_drop_anon_shm_handle(shm);
return;
if (ddtrace_ffi_try("Failed allocating shared memory", ddog_alloc_anon_shm_handle(limit, &shm))) {
if (!ddtrace_ffi_try("Failed mapping shared memory", ddog_map_shm(shm, &dd_limiter_mapped_shm, (void **)&dd_limiter, &_size))) {
dd_limiter = &dd_local_limiter;
ddog_drop_anon_shm_handle(shm);
}
} else {
dd_limiter = &dd_local_limiter;
}

dd_limiter->limit = limit;
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