LLVM  9.0.0svn
MemAlloc.h
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1 //===- MemAlloc.h - Memory allocation functions -----------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 /// \file
9 ///
10 /// This file defines counterparts of C library allocation functions defined in
11 /// the namespace 'std'. The new allocation functions crash on allocation
12 /// failure instead of returning null pointer.
13 ///
14 //===----------------------------------------------------------------------===//
15 
16 #ifndef LLVM_SUPPORT_MEMALLOC_H
17 #define LLVM_SUPPORT_MEMALLOC_H
18 
19 #include "llvm/Support/Compiler.h"
21 #include <cstdlib>
22 
23 namespace llvm {
24 
26  void *Result = std::malloc(Sz);
27  if (Result == nullptr)
28  report_bad_alloc_error("Allocation failed");
29  return Result;
30 }
31 
32 LLVM_ATTRIBUTE_RETURNS_NONNULL inline void *safe_calloc(size_t Count,
33  size_t Sz) {
34  void *Result = std::calloc(Count, Sz);
35  if (Result == nullptr)
36  report_bad_alloc_error("Allocation failed");
37  return Result;
38 }
39 
40 LLVM_ATTRIBUTE_RETURNS_NONNULL inline void *safe_realloc(void *Ptr, size_t Sz) {
41  void *Result = std::realloc(Ptr, Sz);
42  if (Result == nullptr)
43  report_bad_alloc_error("Allocation failed");
44  return Result;
45 }
46 
47 }
48 #endif
This class represents lattice values for constants.
Definition: AllocatorList.h:23
LLVM_ATTRIBUTE_RETURNS_NONNULL void * safe_realloc(void *Ptr, size_t Sz)
Definition: MemAlloc.h:40
#define LLVM_ATTRIBUTE_RETURNS_NONNULL
Definition: Compiler.h:229
void report_bad_alloc_error(const char *Reason, bool GenCrashDiag=true)
Reports a bad alloc error, calling any user defined bad alloc error handler.
LLVM_ATTRIBUTE_RETURNS_NONNULL void * safe_malloc(size_t Sz)
Definition: MemAlloc.h:25
LLVM_ATTRIBUTE_RETURNS_NONNULL void * safe_calloc(size_t Count, size_t Sz)
Definition: MemAlloc.h:32