1 files changed, 149 insertions, 0 deletions
diff --git a/contrib/llvm-project/compiler-rt/lib/memprof/memprof_malloc_linux.cpp b/contrib/llvm-project/compiler-rt/lib/memprof/memprof_malloc_linux.cpp
new file mode 100644
index 000000000000..aba6295a4a04
--- /dev/null
+++ b/contrib/llvm-project/compiler-rt/lib/memprof/memprof_malloc_linux.cpp
@@ -0,0 +1,149 @@
+//===-- memprof_malloc_linux.cpp -----------------------------------------===//
+//
+// 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 file is a part of MemProfiler, a memory profiler.
+//
+// Linux-specific malloc interception.
+// We simply define functions like malloc, free, realloc, etc.
+// They will replace the corresponding libc functions automagically.
+//===----------------------------------------------------------------------===//
+
+#include "sanitizer_common/sanitizer_platform.h"
+#if !SANITIZER_LINUX
+#error Unsupported OS
+#endif
+
+#include "memprof_allocator.h"
+#include "memprof_interceptors.h"
+#include "memprof_internal.h"
+#include "memprof_stack.h"
+#include "sanitizer_common/sanitizer_allocator_checks.h"
+#include "sanitizer_common/sanitizer_allocator_dlsym.h"
+#include "sanitizer_common/sanitizer_errno.h"
+#include "sanitizer_common/sanitizer_tls_get_addr.h"
+
+// ---------------------- Replacement functions ---------------- {{{1
+using namespace __memprof;
+
+struct DlsymAlloc : public DlSymAllocator<DlsymAlloc> {
+  static bool UseImpl() { return memprof_init_is_running; }
+};
+
+INTERCEPTOR(void, free, void *ptr) {
+  if (DlsymAlloc::PointerIsMine(ptr))
+    return DlsymAlloc::Free(ptr);
+  GET_STACK_TRACE_FREE;
+  memprof_free(ptr, &stack, FROM_MALLOC);
+}
+
+#if SANITIZER_INTERCEPT_CFREE
+INTERCEPTOR(void, cfree, void *ptr) {
+  if (DlsymAlloc::PointerIsMine(ptr))
+    return DlsymAlloc::Free(ptr);
+  GET_STACK_TRACE_FREE;
+  memprof_free(ptr, &stack, FROM_MALLOC);
+}
+#endif // SANITIZER_INTERCEPT_CFREE
+
+INTERCEPTOR(void *, malloc, uptr size) {
+  if (DlsymAlloc::Use())
+    return DlsymAlloc::Allocate(size);
+  ENSURE_MEMPROF_INITED();
+  GET_STACK_TRACE_MALLOC;
+  return memprof_malloc(size, &stack);
+}
+
+INTERCEPTOR(void *, calloc, uptr nmemb, uptr size) {
+  if (DlsymAlloc::Use())
+    return DlsymAlloc::Callocate(nmemb, size);
+  ENSURE_MEMPROF_INITED();
+  GET_STACK_TRACE_MALLOC;
+  return memprof_calloc(nmemb, size, &stack);
+}
+
+INTERCEPTOR(void *, realloc, void *ptr, uptr size) {
+  if (DlsymAlloc::Use() || DlsymAlloc::PointerIsMine(ptr))
+    return DlsymAlloc::Realloc(ptr, size);
+  ENSURE_MEMPROF_INITED();
+  GET_STACK_TRACE_MALLOC;
+  return memprof_realloc(ptr, size, &stack);
+}
+
+#if SANITIZER_INTERCEPT_REALLOCARRAY
+INTERCEPTOR(void *, reallocarray, void *ptr, uptr nmemb, uptr size) {
+  ENSURE_MEMPROF_INITED();
+  GET_STACK_TRACE_MALLOC;
+  return memprof_reallocarray(ptr, nmemb, size, &stack);
+}
+#endif // SANITIZER_INTERCEPT_REALLOCARRAY
+
+#if SANITIZER_INTERCEPT_MEMALIGN
+INTERCEPTOR(void *, memalign, uptr boundary, uptr size) {
+  GET_STACK_TRACE_MALLOC;
+  return memprof_memalign(boundary, size, &stack, FROM_MALLOC);
+}
+
+INTERCEPTOR(void *, __libc_memalign, uptr boundary, uptr size) {
+  GET_STACK_TRACE_MALLOC;
+  void *res = memprof_memalign(boundary, size, &stack, FROM_MALLOC);
+  DTLS_on_libc_memalign(res, size);
+  return res;
+}
+#endif // SANITIZER_INTERCEPT_MEMALIGN
+
+#if SANITIZER_INTERCEPT_ALIGNED_ALLOC
+INTERCEPTOR(void *, aligned_alloc, uptr boundary, uptr size) {
+  GET_STACK_TRACE_MALLOC;
+  return memprof_aligned_alloc(boundary, size, &stack);
+}
+#endif // SANITIZER_INTERCEPT_ALIGNED_ALLOC
+
+INTERCEPTOR(uptr, malloc_usable_size, void *ptr) {
+  return memprof_malloc_usable_size(ptr);
+}
+
+#if SANITIZER_INTERCEPT_MALLOPT_AND_MALLINFO
+// We avoid including malloc.h for portability reasons.
+// man mallinfo says the fields are "long", but the implementation uses int.
+// It doesn't matter much -- we just need to make sure that the libc's mallinfo
+// is not called.
+struct fake_mallinfo {
+  int x[10];
+};
+
+INTERCEPTOR(struct fake_mallinfo, mallinfo, void) {
+  struct fake_mallinfo res;
+  REAL(memset)(&res, 0, sizeof(res));
+  return res;
+}
+
+INTERCEPTOR(int, mallopt, int cmd, int value) { return 0; }
+#endif // SANITIZER_INTERCEPT_MALLOPT_AND_MALLINFO
+
+INTERCEPTOR(int, posix_memalign, void **memptr, uptr alignment, uptr size) {
+  GET_STACK_TRACE_MALLOC;
+  return memprof_posix_memalign(memptr, alignment, size, &stack);
+}
+
+INTERCEPTOR(void *, valloc, uptr size) {
+  GET_STACK_TRACE_MALLOC;
+  return memprof_valloc(size, &stack);
+}
+
+#if SANITIZER_INTERCEPT_PVALLOC
+INTERCEPTOR(void *, pvalloc, uptr size) {
+  GET_STACK_TRACE_MALLOC;
+  return memprof_pvalloc(size, &stack);
+}
+#endif // SANITIZER_INTERCEPT_PVALLOC
+
+INTERCEPTOR(void, malloc_stats, void) { __memprof_print_accumulated_stats(); }
+
+namespace __memprof {
+void ReplaceSystemMalloc() {}
+} // namespace __memprof