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chore: remove LEAN_LAZY_RC #15006

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Merged
TwoFX merged 1 commit into from
Sep 3, 2026
+0 −22
Merged

chore: remove LEAN_LAZY_RC #15006

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5 changes: 0 additions & 5 deletions src/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -104,7 +104,6 @@ option(CUSTOM_ALLOCATORS "CUSTOM_ALLOCATORS" ON)
option(SAVE_SNAPSHOT "SAVE_SNAPSHOT" ON)
option(SAVE_INFO "SAVE_INFO" ON)
option(MMAP "MMAP" ON)
option(LAZY_RC "LAZY_RC" OFF)
option(RUNTIME_STATS "RUNTIME_STATS" OFF)
option(BSYMBOLIC "Link with -Bsymbolic to reduce call overhead in shared libraries (Linux)" ON)
option(USE_GMP "USE_GMP" ON)
Expand Down Expand Up @@ -139,10 +138,6 @@ if(WFAIL MATCHES "ON")
string(APPEND LEAN_EXTRA_MAKE_OPTS " -DwarningAsError=true")
endif()

if(LAZY_RC MATCHES "ON")
set(LEAN_LAZY_RC "#define LEAN_LAZY_RC")
endif()

if(USE_MIMALLOC)
set(LEAN_MIMALLOC "#define LEAN_MIMALLOC")
endif()
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1 change: 0 additions & 1 deletion src/config.h.in
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Expand Up @@ -8,5 +8,4 @@ Author: Leonardo de Moura
#include <lean/version.h>

@LEAN_MIMALLOC@
@LEAN_LAZY_RC@
@LEAN_IS_STAGE0@
16 changes: 0 additions & 16 deletions src/runtime/object.cpp
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Expand Up @@ -345,19 +345,7 @@ static inline void dec(lean_object * o, lean_object* & todo) {
}
}

#ifdef LEAN_LAZY_RC
LEAN_THREAD_PTR(object, g_to_free);
#endif

static object * lean_del_core(object * o, object * todo);

extern "C" LEAN_EXPORT lean_object * lean_alloc_object(size_t sz) {
#ifdef LEAN_LAZY_RC
if (g_to_free) {
object * o = pop_back(g_to_free);
g_to_free = lean_del_core(o, g_to_free);
}
#endif
#ifdef LEAN_MIMALLOC
void * r = mi_malloc(sz);
if (r == nullptr) lean_internal_panic_out_of_memory();
Expand Down Expand Up @@ -473,17 +461,13 @@ extern "C" LEAN_EXPORT void lean_dec_ref_cold(lean_object * o) {
if (std::atomic_fetch_add_explicit(lean_get_rc_mt_addr(o), 1, std::memory_order_acq_rel) != -1)
return;
}
#ifdef LEAN_LAZY_RC
push_back(g_to_free, o);
#else
object * todo = nullptr;
while (true) {
todo = lean_del_core(o, todo);
if (todo == nullptr)
return;
o = pop_back(todo);
}
#endif
}


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