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fix: block capture issues for GCD async compile

This commit is contained in:
mgkcloud 2026-03-03 12:06:27 +11:00
parent 0edafd48ca
commit 8fed989146
1 changed files with 5 additions and 4 deletions
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9
training/train_double_buffer.m
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@ -212,8 +212,8 @@ int main(int argc, char *argv[]) {
LayerKernels kern_A[NLAYERS], kern_B[NLAYERS];
LayerKernels *kern_active = kern_A; // currently running evals
LayerKernels *kern_pending = kern_B; // being compiled in background
_Atomic bool pending_ready = false; // signal: pending compile done
_Atomic bool bg_compile_running = false;
static _Atomic bool pending_ready = false; // signal: pending compile done
static _Atomic bool bg_compile_running = false;
dispatch_queue_t compile_q = dispatch_queue_create("ane.compile.bg", DISPATCH_QUEUE_SERIAL);
// Legacy alias for code that uses kern[L]
#define kern kern_active
@ -683,10 +683,11 @@ int main(int argc, char *argv[]) {
if (!atomic_load(&bg_compile_running) &&
g_compile_count + TOTAL_WEIGHT_KERNELS <= MAX_COMPILES) {
atomic_store(&bg_compile_running, true);
// Capture current weight pointers for background block
// Capture pointers (not stack arrays) for background block
LayerKernels *bg_target = kern_pending;
LayerWeights *bg_weights = lw; // decays to pointer, safe for block
dispatch_async(compile_q, ^{
compile_into(bg_target, lw);
compile_into(bg_target, bg_weights);
atomic_store(&pending_ready, true);
atomic_store(&bg_compile_running, false);
});