diff options
Diffstat (limited to 'cont.c')
| -rw-r--r-- | cont.c | 11 |
1 files changed, 10 insertions, 1 deletions
@@ -157,6 +157,9 @@ struct fiber_pool { // The initial number of stacks to allocate. size_t initial_count; + // Whether to madvise(free) the stack or not: + int free_stacks; + // The number of stacks that have been used in this pool. size_t used; @@ -479,6 +482,7 @@ fiber_pool_initialize(struct fiber_pool * fiber_pool, size_t size, size_t count, fiber_pool->size = ((size / RB_PAGE_SIZE) + 1) * RB_PAGE_SIZE; fiber_pool->count = 0; fiber_pool->initial_count = count; + fiber_pool->free_stacks = 1; fiber_pool->used = 0; fiber_pool->vm_stack_size = vm_stack_size; @@ -612,7 +616,12 @@ fiber_pool_stack_release(struct fiber_pool_stack * stack) { // Release address space and/or dirty memory: if (stack->allocation->used == 0) { fiber_pool_allocation_free(stack->allocation); - } else { + } else if (stack->pool->free_stacks) { + fiber_pool_stack_free(stack); + } +#else + // This is entirely optional, but clears the dirty flag from the stack memory, so it won't get swapped to disk when there is memory pressure: + if (stack->pool->free_stacks) { fiber_pool_stack_free(stack); } #endif |