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avoid deadlock with BSD systems that call malloc from the dynamic linker

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extend the exception used for macOS to cover also OpenBSD (tested in 6.4+)
and DragonFlyBSD (tested in 5.6.2)
This commit is contained in:
Carlo Marcelo Arenas Belón 2019-09-01 01:06:01 -07:00
parent acb03c5497
commit 41ef691292
1 changed files with 3 additions and 2 deletions
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5
include/mimalloc-internal.h
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@ -10,7 +10,8 @@ terms of the MIT license. A copy of the license can be found in the file
#include "mimalloc-types.h"
#if defined(MI_MALLOC_OVERRIDE) && (defined(__APPLE__) || defined(__OpenBSD__))
#if defined(MI_MALLOC_OVERRIDE) && \
(defined(__APPLE__) || defined(__OpenBSD__) || defined(__DragonFly__))
#define MI_TLS_RECURSE_GUARD
#endif
@ -221,7 +222,7 @@ extern mi_decl_thread mi_heap_t* _mi_heap_default; // default heap to allocate
static inline mi_heap_t* mi_get_default_heap(void) {
#ifdef MI_TLS_RECURSE_GUARD
// on some platforms, like macOS, the dynamic loader calls `malloc`
// on some BSD platforms, like macOS, the dynamic loader calls `malloc`
// to initialize thread local data. To avoid recursion, we need to avoid
// accessing the thread local `_mi_default_heap` until our module is loaded
// and use the statically allocated main heap until that time.