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clang-p2996/llvm/lib/Support/rpmalloc/malloc.c
Alexandre Ganea 67226bad15 [Support] Vendor rpmalloc in-tree and use it for the Windows 64-bit release (#91862) 
### Context

We have a longstanding performance issue on Windows, where to this day,
the default heap allocator is still lockfull. With the number of cores
increasing, building and using LLVM with the default Windows heap
allocator is sub-optimal. Notably, the ThinLTO link times with LLD are
extremely long, and increase proportionally with the number of cores in
the machine.

In
a6a37a2fcd,
I introduced the ability build LLVM with several popular lock-free
allocators. Downstream users however have to build their own toolchain
with this option, and building an optimal toolchain is a bit tedious and
long. Additionally, LLVM is now integrated into Visual Studio, which
AFAIK re-distributes the vanilla LLVM binaries/installer. The point
being that many users are impacted and might not be aware of this
problem, or are unable to build a more optimal version of the toolchain.

The symptom before this PR is that most of the CPU time goes to the
kernel (darker blue) when linking with ThinLTO:


![16c_ryzen9_windows_heap](https://github.com/llvm/llvm-project/assets/37383324/86c3f6b9-6028-4c1a-ba60-a2fa3876fba7)

With this PR, most time is spent in user space (light blue):


![16c_ryzen9_rpmalloc](https://github.com/llvm/llvm-project/assets/37383324/646b88f3-5b6d-485d-a2e4-15b520bdaf5b)

On higher core count machines, before this PR, the CPU usage becomes
pretty much flat because of contention:

<img width="549" alt="VM_176_windows_heap"
src="https://github.com/llvm/llvm-project/assets/37383324/f27d5800-ee02-496d-a4e7-88177e0727f0">


With this PR, similarily most CPU time is now used:

<img width="549" alt="VM_176_with_rpmalloc"
src="https://github.com/llvm/llvm-project/assets/37383324/7d4785dd-94a7-4f06-9b16-aaa4e2e505c8">

### Changes in this PR

The avenue I've taken here is to vendor/re-licence rpmalloc in-tree, and
use it when building the Windows 64-bit release. Given the permissive
rpmalloc licence, prior discussions with the LLVM foundation and
@lattner suggested this vendoring. Rpmalloc's author (@mjansson) kindly
agreed to ~~donate~~ re-licence the rpmalloc code in LLVM (please do
correct me if I misinterpreted our past communications).

I've chosen rpmalloc because it's small and gives the best value
overall. The source code is only 4 .c files. Rpmalloc is statically
replacing the weak CRT alloc symbols at link time, and has no dynamic
patching like mimalloc. As an alternative, there were several
unsuccessfull attempts made by Russell Gallop to use SCUDO in the past,
please see thread in https://reviews.llvm.org/D86694. If later someone
comes up with a PR of similar performance that uses SCUDO, we could then
delete this vendored rpmalloc folder.

I've added a new cmake flag `LLVM_ENABLE_RPMALLOC` which essentialy sets
`LLVM_INTEGRATED_CRT_ALLOC` to the in-tree rpmalloc source.

### Performance

The most obvious test is profling a ThinLTO linking step with LLD. I've
used a Clang compilation as a testbed, ie.
```
set OPTS=/GS- /D_ITERATOR_DEBUG_LEVEL=0 -Xclang -O3 -fstrict-aliasing -march=native -flto=thin -fwhole-program-vtables -fuse-ld=lld
cmake -G Ninja %ROOT%/llvm -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_ASSERTIONS=TRUE -DLLVM_ENABLE_PROJECTS="clang" -DLLVM_ENABLE_PDB=ON -DLLVM_OPTIMIZED_TABLEGEN=ON -DCMAKE_C_COMPILER=clang-cl.exe -DCMAKE_CXX_COMPILER=clang-cl.exe -DCMAKE_LINKER=lld-link.exe -DLLVM_ENABLE_LLD=ON -DCMAKE_CXX_FLAGS="%OPTS%" -DCMAKE_C_FLAGS="%OPTS%" -DLLVM_ENABLE_LTO=THIN
```
I've profiled the linking step with no LTO cache, with Powershell, such
as:
```
Measure-Command { lld-link /nologo @CMakeFiles\clang.rsp /out:bin\clang.exe /implib:lib\clang.lib /pdb:bin\clang.pdb /version:0.0 /machine:x64 /STACK:10000000 /DEBUG /OPT:REF /OPT:ICF /INCREMENTAL:NO /subsystem:console /MANIFEST:EMBED,ID=1 }`
```

Timings:

| Machine | Allocator | Time to link |
|--------|--------|--------|
| 16c/32t AMD Ryzen 9 5950X | Windows Heap | 10 min 38 sec |
|  | **Rpmalloc** | **4 min 11 sec** |
| 32c/64t AMD Ryzen Threadripper PRO 3975WX | Windows Heap | 23 min 29
sec |
|  | **Rpmalloc** | **2 min 11 sec** |
|  | **Rpmalloc + /threads:64** | **1 min 50 sec** |
| 176 vCPU (2 socket) Intel Xeon Platinium 8481C (fixed clock 2.7 GHz) |
Windows Heap | 43 min 40 sec |
|  | **Rpmalloc** | **1 min 45 sec** |

This also improves the overall performance when building with clang-cl.
I've profiled a regular compilation of clang itself, ie:
```
set OPTS=/GS- /D_ITERATOR_DEBUG_LEVEL=0 /arch:AVX -fuse-ld=lld
cmake -G Ninja %ROOT%/llvm -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_ASSERTIONS=TRUE -DLLVM_ENABLE_PROJECTS="clang;lld" -DLLVM_ENABLE_PDB=ON -DLLVM_OPTIMIZED_TABLEGEN=ON -DCMAKE_C_COMPILER=clang-cl.exe -DCMAKE_CXX_COMPILER=clang-cl.exe -DCMAKE_LINKER=lld-link.exe -DLLVM_ENABLE_LLD=ON -DCMAKE_CXX_FLAGS="%OPTS%" -DCMAKE_C_FLAGS="%OPTS%"
```
This saves approx. 30 sec when building on the Threadripper PRO 3975WX:
```
(default Windows Heap)
C:\src\git\llvm-project>hyperfine -r 5 -p "make_llvm.bat stage1_test2" "ninja clang -C stage1_test2"
Benchmark 1: ninja clang -C stage1_test2
  Time (mean ± σ):     392.716 s ±  3.830 s    [User: 17734.025 s, System: 1078.674 s]
  Range (min … max):   390.127 s … 399.449 s    5 runs

(rpmalloc)
C:\src\git\llvm-project>hyperfine -r 5 -p "make_llvm.bat stage1_test2" "ninja clang -C stage1_test2"
Benchmark 1: ninja clang -C stage1_test2
  Time (mean ± σ):     360.824 s ±  1.162 s    [User: 15148.637 s, System: 905.175 s]
  Range (min … max):   359.208 s … 362.288 s    5 runs
```
2024-06-20 10:54:02 -04:00

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//===------------------------ malloc.c ------------------*- C -*-=============//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This library provides a cross-platform lock free thread caching malloc
// implementation in C11.
//
//
// This file provides overrides for the standard library malloc entry points for
// C and new/delete operators for C++ It also provides automatic
// initialization/finalization of process and threads
//
//===----------------------------------------------------------------------===//
#if defined(__TINYC__)
#include <sys/types.h>
#endif
#ifndef ARCH_64BIT
#if defined(__LLP64__) || defined(__LP64__) || defined(_WIN64)
#define ARCH_64BIT 1
_Static_assert(sizeof(size_t) == 8, "Data type size mismatch");
_Static_assert(sizeof(void *) == 8, "Data type size mismatch");
#else
#define ARCH_64BIT 0
_Static_assert(sizeof(size_t) == 4, "Data type size mismatch");
_Static_assert(sizeof(void *) == 4, "Data type size mismatch");
#endif
#endif
#if (defined(__GNUC__) || defined(__clang__))
#pragma GCC visibility push(default)
#endif
#define USE_IMPLEMENT 1
#define USE_INTERPOSE 0
#define USE_ALIAS 0
#if defined(__APPLE__)
#undef USE_INTERPOSE
#define USE_INTERPOSE 1
typedef struct interpose_t {
void *new_func;
void *orig_func;
} interpose_t;
#define MAC_INTERPOSE_PAIR(newf, oldf) {(void *)newf, (void *)oldf}
#define MAC_INTERPOSE_SINGLE(newf, oldf) \
__attribute__((used)) static const interpose_t macinterpose##newf##oldf \
__attribute__((section("__DATA, __interpose"))) = \
MAC_INTERPOSE_PAIR(newf, oldf)
#endif
#if !defined(_WIN32) && !defined(__APPLE__)
#undef USE_IMPLEMENT
#undef USE_ALIAS
#define USE_IMPLEMENT 0
#define USE_ALIAS 1
#endif
#ifdef _MSC_VER
#pragma warning(disable : 4100)
#undef malloc
#undef free
#undef calloc
#define RPMALLOC_RESTRICT __declspec(restrict)
#else
#define RPMALLOC_RESTRICT
#endif
#if ENABLE_OVERRIDE
typedef struct rp_nothrow_t {
int __dummy;
} rp_nothrow_t;
#if USE_IMPLEMENT
extern inline RPMALLOC_RESTRICT void *RPMALLOC_CDECL malloc(size_t size) {
return rpmalloc(size);
}
extern inline RPMALLOC_RESTRICT void *RPMALLOC_CDECL calloc(size_t count,
size_t size) {
return rpcalloc(count, size);
}
extern inline RPMALLOC_RESTRICT void *RPMALLOC_CDECL realloc(void *ptr,
size_t size) {
return rprealloc(ptr, size);
}
extern inline void *RPMALLOC_CDECL reallocf(void *ptr, size_t size) {
return rprealloc(ptr, size);
}
extern inline void *RPMALLOC_CDECL aligned_alloc(size_t alignment,
size_t size) {
return rpaligned_alloc(alignment, size);
}
extern inline void *RPMALLOC_CDECL memalign(size_t alignment, size_t size) {
return rpmemalign(alignment, size);
}
extern inline int RPMALLOC_CDECL posix_memalign(void **memptr, size_t alignment,
size_t size) {
return rpposix_memalign(memptr, alignment, size);
}
extern inline void RPMALLOC_CDECL free(void *ptr) { rpfree(ptr); }
extern inline void RPMALLOC_CDECL cfree(void *ptr) { rpfree(ptr); }
extern inline size_t RPMALLOC_CDECL malloc_usable_size(void *ptr) {
return rpmalloc_usable_size(ptr);
}
extern inline size_t RPMALLOC_CDECL malloc_size(void *ptr) {
return rpmalloc_usable_size(ptr);
}
#ifdef _WIN32
extern inline RPMALLOC_RESTRICT void *RPMALLOC_CDECL _malloc_base(size_t size) {
return rpmalloc(size);
}
extern inline void RPMALLOC_CDECL _free_base(void *ptr) { rpfree(ptr); }
extern inline RPMALLOC_RESTRICT void *RPMALLOC_CDECL _calloc_base(size_t count,
size_t size) {
return rpcalloc(count, size);
}
extern inline size_t RPMALLOC_CDECL _msize(void *ptr) {
return rpmalloc_usable_size(ptr);
}
extern inline size_t RPMALLOC_CDECL _msize_base(void *ptr) {
return rpmalloc_usable_size(ptr);
}
extern inline RPMALLOC_RESTRICT void *RPMALLOC_CDECL
_realloc_base(void *ptr, size_t size) {
return rprealloc(ptr, size);
}
#endif
#ifdef _WIN32
// For Windows, #include <rpnew.h> in one source file to get the C++ operator
// overrides implemented in your module
#else
// Overload the C++ operators using the mangled names
// (https://itanium-cxx-abi.github.io/cxx-abi/abi.html#mangling) operators
// delete and delete[]
#define RPDEFVIS __attribute__((visibility("default")))
extern void _ZdlPv(void *p);
void RPDEFVIS _ZdlPv(void *p) { rpfree(p); }
extern void _ZdaPv(void *p);
void RPDEFVIS _ZdaPv(void *p) { rpfree(p); }
#if ARCH_64BIT
// 64-bit operators new and new[], normal and aligned
extern void *_Znwm(uint64_t size);
void *RPDEFVIS _Znwm(uint64_t size) { return rpmalloc(size); }
extern void *_Znam(uint64_t size);
void *RPDEFVIS _Znam(uint64_t size) { return rpmalloc(size); }
extern void *_Znwmm(uint64_t size, uint64_t align);
void *RPDEFVIS _Znwmm(uint64_t size, uint64_t align) {
return rpaligned_alloc(align, size);
}
extern void *_Znamm(uint64_t size, uint64_t align);
void *RPDEFVIS _Znamm(uint64_t size, uint64_t align) {
return rpaligned_alloc(align, size);
}
extern void *_ZnwmSt11align_val_t(uint64_t size, uint64_t align);
void *RPDEFVIS _ZnwmSt11align_val_t(uint64_t size, uint64_t align) {
return rpaligned_alloc(align, size);
}
extern void *_ZnamSt11align_val_t(uint64_t size, uint64_t align);
void *RPDEFVIS _ZnamSt11align_val_t(uint64_t size, uint64_t align) {
return rpaligned_alloc(align, size);
}
extern void *_ZnwmRKSt9nothrow_t(uint64_t size, rp_nothrow_t t);
void *RPDEFVIS _ZnwmRKSt9nothrow_t(uint64_t size, rp_nothrow_t t) {
(void)sizeof(t);
return rpmalloc(size);
}
extern void *_ZnamRKSt9nothrow_t(uint64_t size, rp_nothrow_t t);
void *RPDEFVIS _ZnamRKSt9nothrow_t(uint64_t size, rp_nothrow_t t) {
(void)sizeof(t);
return rpmalloc(size);
}
extern void *_ZnwmSt11align_val_tRKSt9nothrow_t(uint64_t size, uint64_t align,
rp_nothrow_t t);
void *RPDEFVIS _ZnwmSt11align_val_tRKSt9nothrow_t(uint64_t size, uint64_t align,
rp_nothrow_t t) {
(void)sizeof(t);
return rpaligned_alloc(align, size);
}
extern void *_ZnamSt11align_val_tRKSt9nothrow_t(uint64_t size, uint64_t align,
rp_nothrow_t t);
void *RPDEFVIS _ZnamSt11align_val_tRKSt9nothrow_t(uint64_t size, uint64_t align,
rp_nothrow_t t) {
(void)sizeof(t);
return rpaligned_alloc(align, size);
}
// 64-bit operators sized delete and delete[], normal and aligned
extern void _ZdlPvm(void *p, uint64_t size);
void RPDEFVIS _ZdlPvm(void *p, uint64_t size) {
rpfree(p);
(void)sizeof(size);
}
extern void _ZdaPvm(void *p, uint64_t size);
void RPDEFVIS _ZdaPvm(void *p, uint64_t size) {
rpfree(p);
(void)sizeof(size);
}
extern void _ZdlPvSt11align_val_t(void *p, uint64_t align);
void RPDEFVIS _ZdlPvSt11align_val_t(void *p, uint64_t align) {
rpfree(p);
(void)sizeof(align);
}
extern void _ZdaPvSt11align_val_t(void *p, uint64_t align);
void RPDEFVIS _ZdaPvSt11align_val_t(void *p, uint64_t align) {
rpfree(p);
(void)sizeof(align);
}
extern void _ZdlPvmSt11align_val_t(void *p, uint64_t size, uint64_t align);
void RPDEFVIS _ZdlPvmSt11align_val_t(void *p, uint64_t size, uint64_t align) {
rpfree(p);
(void)sizeof(size);
(void)sizeof(align);
}
extern void _ZdaPvmSt11align_val_t(void *p, uint64_t size, uint64_t align);
void RPDEFVIS _ZdaPvmSt11align_val_t(void *p, uint64_t size, uint64_t align) {
rpfree(p);
(void)sizeof(size);
(void)sizeof(align);
}
#else
// 32-bit operators new and new[], normal and aligned
extern void *_Znwj(uint32_t size);
void *RPDEFVIS _Znwj(uint32_t size) { return rpmalloc(size); }
extern void *_Znaj(uint32_t size);
void *RPDEFVIS _Znaj(uint32_t size) { return rpmalloc(size); }
extern void *_Znwjj(uint32_t size, uint32_t align);
void *RPDEFVIS _Znwjj(uint32_t size, uint32_t align) {
return rpaligned_alloc(align, size);
}
extern void *_Znajj(uint32_t size, uint32_t align);
void *RPDEFVIS _Znajj(uint32_t size, uint32_t align) {
return rpaligned_alloc(align, size);
}
extern void *_ZnwjSt11align_val_t(size_t size, size_t align);
void *RPDEFVIS _ZnwjSt11align_val_t(size_t size, size_t align) {
return rpaligned_alloc(align, size);
}
extern void *_ZnajSt11align_val_t(size_t size, size_t align);
void *RPDEFVIS _ZnajSt11align_val_t(size_t size, size_t align) {
return rpaligned_alloc(align, size);
}
extern void *_ZnwjRKSt9nothrow_t(size_t size, rp_nothrow_t t);
void *RPDEFVIS _ZnwjRKSt9nothrow_t(size_t size, rp_nothrow_t t) {
(void)sizeof(t);
return rpmalloc(size);
}
extern void *_ZnajRKSt9nothrow_t(size_t size, rp_nothrow_t t);
void *RPDEFVIS _ZnajRKSt9nothrow_t(size_t size, rp_nothrow_t t) {
(void)sizeof(t);
return rpmalloc(size);
}
extern void *_ZnwjSt11align_val_tRKSt9nothrow_t(size_t size, size_t align,
rp_nothrow_t t);
void *RPDEFVIS _ZnwjSt11align_val_tRKSt9nothrow_t(size_t size, size_t align,
rp_nothrow_t t) {
(void)sizeof(t);
return rpaligned_alloc(align, size);
}
extern void *_ZnajSt11align_val_tRKSt9nothrow_t(size_t size, size_t align,
rp_nothrow_t t);
void *RPDEFVIS _ZnajSt11align_val_tRKSt9nothrow_t(size_t size, size_t align,
rp_nothrow_t t) {
(void)sizeof(t);
return rpaligned_alloc(align, size);
}
// 32-bit operators sized delete and delete[], normal and aligned
extern void _ZdlPvj(void *p, uint64_t size);
void RPDEFVIS _ZdlPvj(void *p, uint64_t size) {
rpfree(p);
(void)sizeof(size);
}
extern void _ZdaPvj(void *p, uint64_t size);
void RPDEFVIS _ZdaPvj(void *p, uint64_t size) {
rpfree(p);
(void)sizeof(size);
}
extern void _ZdlPvSt11align_val_t(void *p, uint32_t align);
void RPDEFVIS _ZdlPvSt11align_val_t(void *p, uint64_t a) {
rpfree(p);
(void)sizeof(align);
}
extern void _ZdaPvSt11align_val_t(void *p, uint32_t align);
void RPDEFVIS _ZdaPvSt11align_val_t(void *p, uint64_t a) {
rpfree(p);
(void)sizeof(align);
}
extern void _ZdlPvjSt11align_val_t(void *p, uint32_t size, uint32_t align);
void RPDEFVIS _ZdlPvjSt11align_val_t(void *p, uint64_t size, uint64_t align) {
rpfree(p);
(void)sizeof(size);
(void)sizeof(a);
}
extern void _ZdaPvjSt11align_val_t(void *p, uint32_t size, uint32_t align);
void RPDEFVIS _ZdaPvjSt11align_val_t(void *p, uint64_t size, uint64_t align) {
rpfree(p);
(void)sizeof(size);
(void)sizeof(a);
}
#endif
#endif
#endif
#if USE_INTERPOSE || USE_ALIAS
static void *rpmalloc_nothrow(size_t size, rp_nothrow_t t) {
(void)sizeof(t);
return rpmalloc(size);
}
static void *rpaligned_alloc_reverse(size_t size, size_t align) {
return rpaligned_alloc(align, size);
}
static void *rpaligned_alloc_reverse_nothrow(size_t size, size_t align,
rp_nothrow_t t) {
(void)sizeof(t);
return rpaligned_alloc(align, size);
}
static void rpfree_size(void *p, size_t size) {
(void)sizeof(size);
rpfree(p);
}
static void rpfree_aligned(void *p, size_t align) {
(void)sizeof(align);
rpfree(p);
}
static void rpfree_size_aligned(void *p, size_t size, size_t align) {
(void)sizeof(size);
(void)sizeof(align);
rpfree(p);
}
#endif
#if USE_INTERPOSE
__attribute__((used)) static const interpose_t macinterpose_malloc[]
__attribute__((section("__DATA, __interpose"))) = {
// new and new[]
MAC_INTERPOSE_PAIR(rpmalloc, _Znwm),
MAC_INTERPOSE_PAIR(rpmalloc, _Znam),
MAC_INTERPOSE_PAIR(rpaligned_alloc_reverse, _Znwmm),
MAC_INTERPOSE_PAIR(rpaligned_alloc_reverse, _Znamm),
MAC_INTERPOSE_PAIR(rpmalloc_nothrow, _ZnwmRKSt9nothrow_t),
MAC_INTERPOSE_PAIR(rpmalloc_nothrow, _ZnamRKSt9nothrow_t),
MAC_INTERPOSE_PAIR(rpaligned_alloc_reverse, _ZnwmSt11align_val_t),
MAC_INTERPOSE_PAIR(rpaligned_alloc_reverse, _ZnamSt11align_val_t),
MAC_INTERPOSE_PAIR(rpaligned_alloc_reverse_nothrow,
_ZnwmSt11align_val_tRKSt9nothrow_t),
MAC_INTERPOSE_PAIR(rpaligned_alloc_reverse_nothrow,
_ZnamSt11align_val_tRKSt9nothrow_t),
// delete and delete[]
MAC_INTERPOSE_PAIR(rpfree, _ZdlPv), MAC_INTERPOSE_PAIR(rpfree, _ZdaPv),
MAC_INTERPOSE_PAIR(rpfree_size, _ZdlPvm),
MAC_INTERPOSE_PAIR(rpfree_size, _ZdaPvm),
MAC_INTERPOSE_PAIR(rpfree_aligned, _ZdlPvSt11align_val_t),
MAC_INTERPOSE_PAIR(rpfree_aligned, _ZdaPvSt11align_val_t),
MAC_INTERPOSE_PAIR(rpfree_size_aligned, _ZdlPvmSt11align_val_t),
MAC_INTERPOSE_PAIR(rpfree_size_aligned, _ZdaPvmSt11align_val_t),
// libc entry points
MAC_INTERPOSE_PAIR(rpmalloc, malloc),
MAC_INTERPOSE_PAIR(rpmalloc, calloc),
MAC_INTERPOSE_PAIR(rprealloc, realloc),
MAC_INTERPOSE_PAIR(rprealloc, reallocf),
#if defined(__MAC_10_15) && __MAC_OS_X_VERSION_MIN_REQUIRED >= __MAC_10_15
MAC_INTERPOSE_PAIR(rpaligned_alloc, aligned_alloc),
#endif
MAC_INTERPOSE_PAIR(rpmemalign, memalign),
MAC_INTERPOSE_PAIR(rpposix_memalign, posix_memalign),
MAC_INTERPOSE_PAIR(rpfree, free), MAC_INTERPOSE_PAIR(rpfree, cfree),
MAC_INTERPOSE_PAIR(rpmalloc_usable_size, malloc_usable_size),
MAC_INTERPOSE_PAIR(rpmalloc_usable_size, malloc_size)};
#endif
#if USE_ALIAS
#define RPALIAS(fn) __attribute__((alias(#fn), used, visibility("default")));
// Alias the C++ operators using the mangled names
// (https://itanium-cxx-abi.github.io/cxx-abi/abi.html#mangling)
// operators delete and delete[]
void _ZdlPv(void *p) RPALIAS(rpfree) void _ZdaPv(void *p) RPALIAS(rpfree)
#if ARCH_64BIT
// 64-bit operators new and new[], normal and aligned
void *_Znwm(uint64_t size) RPMALLOC_ATTRIB_MALLOC
RPMALLOC_ATTRIB_ALLOC_SIZE(1)
RPALIAS(rpmalloc) void *_Znam(uint64_t size) RPMALLOC_ATTRIB_MALLOC
RPMALLOC_ATTRIB_ALLOC_SIZE(1) RPALIAS(rpmalloc) void *_Znwmm(uint64_t size,
uint64_t align)
RPALIAS(rpaligned_alloc_reverse) void *_Znamm(uint64_t size,
uint64_t align)
RPALIAS(rpaligned_alloc_reverse) void *_ZnwmSt11align_val_t(
size_t size, size_t align)
RPALIAS(rpaligned_alloc_reverse) void *_ZnamSt11align_val_t(
size_t size, size_t align)
RPALIAS(rpaligned_alloc_reverse) void *_ZnwmRKSt9nothrow_t(
size_t size, rp_nothrow_t t)
RPALIAS(rpmalloc_nothrow) void *_ZnamRKSt9nothrow_t(
size_t size,
rp_nothrow_t t) RPALIAS(rpmalloc_nothrow) void
*_ZnwmSt11align_val_tRKSt9nothrow_t(size_t size,
size_t align,
rp_nothrow_t t)
RPALIAS(rpaligned_alloc_reverse_nothrow) void
*_ZnamSt11align_val_tRKSt9nothrow_t(
size_t size, size_t align,
rp_nothrow_t t)
RPALIAS(rpaligned_alloc_reverse_nothrow)
// 64-bit operators delete and delete[], sized and aligned
void _ZdlPvm(void *p, size_t n) RPALIAS(rpfree_size) void _ZdaPvm(void *p,
size_t n)
RPALIAS(rpfree_size) void _ZdlPvSt11align_val_t(void *p, size_t a)
RPALIAS(rpfree_aligned) void _ZdaPvSt11align_val_t(void *p,
size_t a)
RPALIAS(rpfree_aligned) void _ZdlPvmSt11align_val_t(void *p,
size_t n,
size_t a)
RPALIAS(rpfree_size_aligned) void _ZdaPvmSt11align_val_t(
void *p, size_t n, size_t a)
RPALIAS(rpfree_size_aligned)
#else
// 32-bit operators new and new[], normal and aligned
void *_Znwj(uint32_t size) RPMALLOC_ATTRIB_MALLOC
RPMALLOC_ATTRIB_ALLOC_SIZE(1)
RPALIAS(rpmalloc) void *_Znaj(uint32_t size) RPMALLOC_ATTRIB_MALLOC
RPMALLOC_ATTRIB_ALLOC_SIZE(1) RPALIAS(rpmalloc) void *_Znwjj(uint32_t size,
uint32_t align)
RPALIAS(rpaligned_alloc_reverse) void *_Znajj(uint32_t size,
uint32_t align)
RPALIAS(rpaligned_alloc_reverse) void *_ZnwjSt11align_val_t(
size_t size, size_t align)
RPALIAS(rpaligned_alloc_reverse) void *_ZnajSt11align_val_t(
size_t size, size_t align)
RPALIAS(rpaligned_alloc_reverse) void *_ZnwjRKSt9nothrow_t(
size_t size, rp_nothrow_t t)
RPALIAS(rpmalloc_nothrow) void *_ZnajRKSt9nothrow_t(
size_t size,
rp_nothrow_t t) RPALIAS(rpmalloc_nothrow) void
*_ZnwjSt11align_val_tRKSt9nothrow_t(size_t size,
size_t align,
rp_nothrow_t t)
RPALIAS(rpaligned_alloc_reverse_nothrow) void
*_ZnajSt11align_val_tRKSt9nothrow_t(
size_t size, size_t align,
rp_nothrow_t t)
RPALIAS(rpaligned_alloc_reverse_nothrow)
// 32-bit operators delete and delete[], sized and aligned
void _ZdlPvj(void *p, size_t n) RPALIAS(rpfree_size) void _ZdaPvj(void *p,
size_t n)
RPALIAS(rpfree_size) void _ZdlPvSt11align_val_t(void *p, size_t a)
RPALIAS(rpfree_aligned) void _ZdaPvSt11align_val_t(void *p,
size_t a)
RPALIAS(rpfree_aligned) void _ZdlPvjSt11align_val_t(void *p,
size_t n,
size_t a)
RPALIAS(rpfree_size_aligned) void _ZdaPvjSt11align_val_t(
void *p, size_t n, size_t a)
RPALIAS(rpfree_size_aligned)
#endif
void *malloc(size_t size) RPMALLOC_ATTRIB_MALLOC
RPMALLOC_ATTRIB_ALLOC_SIZE(1)
RPALIAS(rpmalloc) void *calloc(size_t count, size_t size)
RPALIAS(rpcalloc) void *realloc(void *ptr, size_t size)
RPALIAS(rprealloc) void *reallocf(void *ptr, size_t size)
RPMALLOC_ATTRIB_MALLOC
RPMALLOC_ATTRIB_ALLOC_SIZE(2)
RPALIAS(rprealloc) void *aligned_alloc(size_t alignment, size_t size)
RPALIAS(rpaligned_alloc) void *memalign(
size_t alignment, size_t size) RPMALLOC_ATTRIB_MALLOC
RPMALLOC_ATTRIB_ALLOC_SIZE(2)
RPALIAS(rpmemalign) int posix_memalign(void **memptr, size_t alignment,
size_t size)
RPALIAS(rpposix_memalign) void free(void *ptr)
RPALIAS(rpfree) void cfree(void *ptr) RPALIAS(rpfree)
#if defined(__ANDROID__) || defined(__FreeBSD__)
size_t
malloc_usable_size(const void *ptr) RPALIAS(rpmalloc_usable_size)
#else
size_t
malloc_usable_size(void *ptr) RPALIAS(rpmalloc_usable_size)
#endif
size_t malloc_size(void *ptr) RPALIAS(rpmalloc_usable_size)
#endif
static inline size_t _rpmalloc_page_size(void) {
return _memory_page_size;
}
extern void *RPMALLOC_CDECL reallocarray(void *ptr, size_t count, size_t size);
extern void *RPMALLOC_CDECL reallocarray(void *ptr, size_t count, size_t size) {
size_t total;
#if ENABLE_VALIDATE_ARGS
#ifdef _MSC_VER
int err = SizeTMult(count, size, &total);
if ((err != S_OK) || (total >= MAX_ALLOC_SIZE)) {
errno = EINVAL;
return 0;
}
#else
int err = __builtin_umull_overflow(count, size, &total);
if (err || (total >= MAX_ALLOC_SIZE)) {
errno = EINVAL;
return 0;
}
#endif
#else
total = count * size;
#endif
return realloc(ptr, total);
}
extern inline void *RPMALLOC_CDECL valloc(size_t size) {
get_thread_heap();
return rpaligned_alloc(_rpmalloc_page_size(), size);
}
extern inline void *RPMALLOC_CDECL pvalloc(size_t size) {
get_thread_heap();
const size_t page_size = _rpmalloc_page_size();
const size_t aligned_size = ((size + page_size - 1) / page_size) * page_size;
#if ENABLE_VALIDATE_ARGS
if (aligned_size < size) {
errno = EINVAL;
return 0;
}
#endif
return rpaligned_alloc(_rpmalloc_page_size(), aligned_size);
}
#endif // ENABLE_OVERRIDE
#if ENABLE_PRELOAD
#ifdef _WIN32
#if defined(BUILD_DYNAMIC_LINK) && BUILD_DYNAMIC_LINK
extern __declspec(dllexport) BOOL WINAPI DllMain(HINSTANCE instance,
DWORD reason, LPVOID reserved);
extern __declspec(dllexport) BOOL WINAPI DllMain(HINSTANCE instance,
DWORD reason,
LPVOID reserved) {
(void)sizeof(reserved);
(void)sizeof(instance);
if (reason == DLL_PROCESS_ATTACH)
rpmalloc_initialize();
else if (reason == DLL_PROCESS_DETACH)
rpmalloc_finalize();
else if (reason == DLL_THREAD_ATTACH)
rpmalloc_thread_initialize();
else if (reason == DLL_THREAD_DETACH)
rpmalloc_thread_finalize(1);
return TRUE;
}
// end BUILD_DYNAMIC_LINK
#else
extern void _global_rpmalloc_init(void) {
rpmalloc_set_main_thread();
rpmalloc_initialize();
}
#if defined(__clang__) || defined(__GNUC__)
static void __attribute__((constructor)) initializer(void) {
_global_rpmalloc_init();
}
#elif defined(_MSC_VER)
static int _global_rpmalloc_xib(void) {
_global_rpmalloc_init();
return 0;
}
#pragma section(".CRT$XIB", read)
__declspec(allocate(".CRT$XIB")) void (*_rpmalloc_module_init)(void) =
_global_rpmalloc_xib;
#if defined(_M_IX86) || defined(__i386__)
#pragma comment(linker, "/include:" \
"__rpmalloc_module_init")
#else
#pragma comment(linker, "/include:" \
"_rpmalloc_module_init")
#endif
#endif
// end !BUILD_DYNAMIC_LINK
#endif
#else
#include <pthread.h>
#include <stdint.h>
#include <stdlib.h>
#include <unistd.h>
extern void rpmalloc_set_main_thread(void);
static pthread_key_t destructor_key;
static void thread_destructor(void *);
static void __attribute__((constructor)) initializer(void) {
rpmalloc_set_main_thread();
rpmalloc_initialize();
pthread_key_create(&destructor_key, thread_destructor);
}
static void __attribute__((destructor)) finalizer(void) { rpmalloc_finalize(); }
typedef struct {
void *(*real_start)(void *);
void *real_arg;
} thread_starter_arg;
static void *thread_starter(void *argptr) {
thread_starter_arg *arg = argptr;
void *(*real_start)(void *) = arg->real_start;
void *real_arg = arg->real_arg;
rpmalloc_thread_initialize();
rpfree(argptr);
pthread_setspecific(destructor_key, (void *)1);
return (*real_start)(real_arg);
}
static void thread_destructor(void *value) {
(void)sizeof(value);
rpmalloc_thread_finalize(1);
}
#ifdef __APPLE__
static int pthread_create_proxy(pthread_t *thread, const pthread_attr_t *attr,
void *(*start_routine)(void *), void *arg) {
rpmalloc_initialize();
thread_starter_arg *starter_arg = rpmalloc(sizeof(thread_starter_arg));
starter_arg->real_start = start_routine;
starter_arg->real_arg = arg;
return pthread_create(thread, attr, thread_starter, starter_arg);
}
MAC_INTERPOSE_SINGLE(pthread_create_proxy, pthread_create);
#else
#include <dlfcn.h>
int pthread_create(pthread_t *thread, const pthread_attr_t *attr,
void *(*start_routine)(void *), void *arg) {
#if defined(__linux__) || defined(__FreeBSD__) || defined(__OpenBSD__) || \
defined(__NetBSD__) || defined(__DragonFly__) || defined(__APPLE__) || \
defined(__HAIKU__)
char fname[] = "pthread_create";
#else
char fname[] = "_pthread_create";
#endif
void *real_pthread_create = dlsym(RTLD_NEXT, fname);
rpmalloc_thread_initialize();
thread_starter_arg *starter_arg = rpmalloc(sizeof(thread_starter_arg));
starter_arg->real_start = start_routine;
starter_arg->real_arg = arg;
return (*(int (*)(pthread_t *, const pthread_attr_t *, void *(*)(void *),
void *))real_pthread_create)(thread, attr, thread_starter,
starter_arg);
}
#endif
#endif
#endif
#if ENABLE_OVERRIDE
#if defined(__GLIBC__) && defined(__linux__)
void *__libc_malloc(size_t size) RPMALLOC_ATTRIB_MALLOC
RPMALLOC_ATTRIB_ALLOC_SIZE(1)
RPALIAS(rpmalloc) void *__libc_calloc(size_t count, size_t size)
RPMALLOC_ATTRIB_MALLOC RPMALLOC_ATTRIB_ALLOC_SIZE2(1, 2)
RPALIAS(rpcalloc) void *__libc_realloc(void *p, size_t size)
RPMALLOC_ATTRIB_MALLOC
RPMALLOC_ATTRIB_ALLOC_SIZE(2) RPALIAS(rprealloc) void __libc_free(void *p)
RPALIAS(rpfree) void __libc_cfree(void *p)
RPALIAS(rpfree) void *__libc_memalign(size_t align, size_t size)
RPMALLOC_ATTRIB_MALLOC
RPMALLOC_ATTRIB_ALLOC_SIZE(2)
RPALIAS(rpmemalign) int __posix_memalign(void **p, size_t align,
size_t size)
RPALIAS(rpposix_memalign)
extern void *__libc_valloc(size_t size);
extern void *__libc_pvalloc(size_t size);
void *__libc_valloc(size_t size) { return valloc(size); }
void *__libc_pvalloc(size_t size) { return pvalloc(size); }
#endif
#endif
#if (defined(__GNUC__) || defined(__clang__))
#pragma GCC visibility pop
#endif
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