SetUnbuffered();
}
-void raw_ostream::SetBufferAndMode(char *BufferStart, size_t Size,
+void raw_ostream::SetBufferAndMode(char *BufferStart, size_t Size,
BufferKind Mode) {
- assert(((Mode == Unbuffered && BufferStart == 0 && Size == 0) ||
+ assert(((Mode == Unbuffered && BufferStart == 0 && Size == 0) ||
(Mode != Unbuffered && BufferStart && Size)) &&
"stream must be unbuffered or have at least one byte");
// Make sure the current buffer is free of content (we can't flush here; the
// Zero is a special case.
if (N == 0)
return *this << '0';
-
+
char NumberBuffer[20];
char *EndPtr = NumberBuffer+sizeof(NumberBuffer);
char *CurPtr = EndPtr;
-
+
while (N) {
*--CurPtr = '0' + char(N % 10);
N /= 10;
*this << '-';
N = -N;
}
-
+
return this->operator<<(static_cast<unsigned long>(N));
}
char NumberBuffer[20];
char *EndPtr = NumberBuffer+sizeof(NumberBuffer);
char *CurPtr = EndPtr;
-
+
while (N) {
*--CurPtr = '0' + char(N % 10);
N /= 10;
*this << '-';
N = -N;
}
-
+
return this->operator<<(static_cast<unsigned long long>(N));
}
size_t BufferBytesLeft = OutBufEnd - OutBufCur;
if (BufferBytesLeft > 3) {
size_t BytesUsed = Fmt.print(OutBufCur, BufferBytesLeft);
-
+
// Common case is that we have plenty of space.
if (BytesUsed <= BufferBytesLeft) {
OutBufCur += BytesUsed;
return *this;
}
-
+
// Otherwise, we overflowed and the return value tells us the size to try
// again with.
NextBufferSize = BytesUsed;
}
-
+
// If we got here, we didn't have enough space in the output buffer for the
// string. Try printing into a SmallVector that is resized to have enough
// space. Iterate until we win.
SmallVector<char, 128> V;
-
+
while (1) {
V.resize(NextBufferSize);
-
+
// Try formatting into the SmallVector.
size_t BytesUsed = Fmt.print(V.data(), NextBufferSize);
-
+
// If BytesUsed fit into the vector, we win.
if (BytesUsed <= NextBufferSize)
return write(V.data(), BytesUsed);
-
+
// Otherwise, try again with a new size.
assert(BytesUsed > NextBufferSize && "Didn't grow buffer!?");
NextBufferSize = BytesUsed;
// Usually the indentation is small, handle it with a fastpath.
if (NumSpaces < array_lengthof(Spaces))
return write(Spaces, NumSpaces);
-
+
while (NumSpaces) {
unsigned NumToWrite = std::min(NumSpaces,
(unsigned)array_lengthof(Spaces)-1);
/// if no error occurred.
raw_fd_ostream::raw_fd_ostream(const char *Filename, std::string &ErrorInfo,
unsigned Flags) : pos(0) {
+ assert(Filename != 0 && "Filename is null");
// Verify that we don't have both "append" and "excl".
assert((!(Flags & F_Excl) || !(Flags & F_Append)) &&
"Cannot specify both 'excl' and 'append' file creation flags!");
-
+
ErrorInfo.clear();
// Handle "-" as stdout.
ShouldClose = false;
return;
}
-
+
int OpenFlags = O_WRONLY|O_CREAT;
#ifdef O_BINARY
if (Flags & F_Binary)
OpenFlags |= O_BINARY;
#endif
-
+
if (Flags & F_Append)
OpenFlags |= O_APPEND;
else
OpenFlags |= O_TRUNC;
if (Flags & F_Excl)
OpenFlags |= O_EXCL;
-
+
FD = open(Filename, OpenFlags, 0664);
if (FD < 0) {
ErrorInfo = "Error opening output file '" + std::string(Filename) + "'";
void raw_fd_ostream::write_impl(const char *Ptr, size_t Size) {
- assert (FD >= 0 && "File already closed.");
+ assert(FD >= 0 && "File already closed.");
pos += Size;
if (::write(FD, Ptr, Size) != (ssize_t) Size)
error_detected();
}
void raw_fd_ostream::close() {
- assert (ShouldClose);
+ assert(ShouldClose);
ShouldClose = false;
flush();
if (::close(FD) != 0)
pos = ::lseek(FD, off, SEEK_SET);
if (pos != off)
error_detected();
- return pos;
+ return pos;
}
size_t raw_fd_ostream::preferred_buffer_size() const {
struct stat statbuf;
if (fstat(FD, &statbuf) != 0)
return 0;
-
+
// If this is a terminal, don't use buffering. Line buffering
// would be a more traditional thing to do, but it's not worth
// the complexity.
}
void raw_svector_ostream::write_impl(const char *Ptr, size_t Size) {
- assert(Ptr == OS.end() && OS.size() + Size <= OS.capacity() &&
- "Invalid write_impl() call!");
-
- // We don't need to copy the bytes, just commit the bytes to the
- // SmallVector.
- OS.set_size(OS.size() + Size);
+ // If we're writing bytes from the end of the buffer into the smallvector, we
+ // don't need to copy the bytes, just commit the bytes because they are
+ // already in the right place.
+ if (Ptr == OS.end()) {
+ assert(OS.size() + Size <= OS.capacity() && "Invalid write_impl() call!");
+ OS.set_size(OS.size() + Size);
+ } else {
+ assert(GetNumBytesInBuffer() == 0 &&
+ "Should be writing from buffer if some bytes in it");
+ // Otherwise, do copy the bytes.
+ OS.append(Ptr, Ptr+Size);
+ }
// Grow the vector if necessary.
if (OS.capacity() - OS.size() < 64)
projects / oota-llvm.git / blobdiff