mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-25 00:29:20 +00:00
Enhance MemoryBuffer to return error messages in strings if they occur.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36899 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
parent
c57ed8b298
commit
5499da8833
@ -15,6 +15,7 @@
|
||||
#define LLVM_SUPPORT_MEMORYBUFFER_H
|
||||
|
||||
#include "llvm/Support/DataTypes.h"
|
||||
#include <string>
|
||||
|
||||
namespace llvm {
|
||||
|
||||
@ -52,6 +53,7 @@ public:
|
||||
/// specified, this means that the client knows that the file exists and that
|
||||
/// it has the specified size.
|
||||
static MemoryBuffer *getFile(const char *FilenameStart, unsigned FnSize,
|
||||
std::string *ErrStr = 0,
|
||||
int64_t FileSize = -1);
|
||||
|
||||
/// getMemBuffer - Open the specified memory range as a MemoryBuffer. Note
|
||||
@ -79,14 +81,24 @@ public:
|
||||
|
||||
|
||||
/// getFileOrSTDIN - Open the specified file as a MemoryBuffer, or open stdin
|
||||
/// if the Filename is "-".
|
||||
/// if the Filename is "-". If an error occurs, this returns null and fills
|
||||
/// in *ErrStr with a reason.
|
||||
static MemoryBuffer *getFileOrSTDIN(const char *FilenameStart,unsigned FnSize,
|
||||
std::string *ErrStr = 0,
|
||||
int64_t FileSize = -1) {
|
||||
if (FnSize == 1 && FilenameStart[0] == '-')
|
||||
return getSTDIN();
|
||||
return getFile(FilenameStart, FnSize, FileSize);
|
||||
return getFile(FilenameStart, FnSize, ErrStr, FileSize);
|
||||
}
|
||||
|
||||
/// getFileOrSTDIN - Open the specified file as a MemoryBuffer, or open stdin
|
||||
/// if the Filename is "-". If an error occurs, this returns null and fills
|
||||
/// in *ErrStr with a reason.
|
||||
static MemoryBuffer *getFileOrSTDIN(const std::string &FN,
|
||||
std::string *ErrStr = 0,
|
||||
int64_t FileSize = -1) {
|
||||
return getFileOrSTDIN(&FN[0], FN.size(), ErrStr, FileSize);
|
||||
}
|
||||
};
|
||||
|
||||
} // end namespace llvm
|
||||
|
@ -113,7 +113,7 @@ class MemoryBufferMMapFile : public MemoryBuffer {
|
||||
public:
|
||||
MemoryBufferMMapFile() {}
|
||||
|
||||
bool open(const sys::Path &Filename);
|
||||
bool open(const sys::Path &Filename, std::string *ErrStr);
|
||||
|
||||
virtual const char *getBufferIdentifier() const {
|
||||
return File.path().c_str();
|
||||
@ -123,13 +123,15 @@ public:
|
||||
};
|
||||
}
|
||||
|
||||
bool MemoryBufferMMapFile::open(const sys::Path &Filename) {
|
||||
bool MemoryBufferMMapFile::open(const sys::Path &Filename,
|
||||
std::string *ErrStr) {
|
||||
// FIXME: This does an extra stat syscall to figure out the size, but we
|
||||
// already know the size!
|
||||
bool Failure = File.open(Filename);
|
||||
bool Failure = File.open(Filename, sys::MappedFile::READ_ACCESS, ErrStr);
|
||||
if (Failure) return true;
|
||||
|
||||
File.map();
|
||||
if (!File.map(ErrStr))
|
||||
return true;
|
||||
|
||||
size_t Size = File.size();
|
||||
|
||||
@ -161,11 +163,13 @@ MemoryBufferMMapFile::~MemoryBufferMMapFile() {
|
||||
//===----------------------------------------------------------------------===//
|
||||
|
||||
MemoryBuffer *MemoryBuffer::getFile(const char *FilenameStart, unsigned FnSize,
|
||||
int64_t FileSize) {
|
||||
std::string *ErrStr, int64_t FileSize){
|
||||
// FIXME: it would be nice if PathWithStatus didn't copy the filename into a
|
||||
// temporary string. :(
|
||||
sys::PathWithStatus P(FilenameStart, FnSize);
|
||||
#if 1
|
||||
MemoryBufferMMapFile *M = new MemoryBufferMMapFile();
|
||||
if (!M->open(P))
|
||||
if (!M->open(P, ErrStr))
|
||||
return M;
|
||||
delete M;
|
||||
return 0;
|
||||
@ -186,7 +190,7 @@ MemoryBuffer *MemoryBuffer::getFile(const char *FilenameStart, unsigned FnSize,
|
||||
// If the file is larger than some threshold, use mmap, otherwise use 'read'.
|
||||
if (FileSize >= 4096*4) {
|
||||
MemoryBufferMMapFile *M = new MemoryBufferMMapFile();
|
||||
if (!M->open(P))
|
||||
if (!M->open(P, ErrStr))
|
||||
return M;
|
||||
delete M;
|
||||
return 0;
|
||||
|
Loading…
Reference in New Issue
Block a user