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Set raw_os_ostream, raw_string_ostream, and raw_svector_ostream to be 

unbuffered. std::ostream does its own buffering, and std::string and
SmallVector both have allocation strategies intended to handle frequent
appending.

llvm-svn: 78924
This commit is contained in:
Dan Gohman 2009-08-13 17:41:40 +00:00
parent 84487b98a5
commit 854ea3c580
2 changed files with 4 additions and 18 deletions
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10
llvm/include/llvm/Support/raw_ostream.h
View File

@ -376,8 +376,7 @@ class raw_os_ostream : public raw_ostream {
virtual uint64_t current_pos();
public:
raw_os_ostream(std::ostream &O) : OS(O) {}
~raw_os_ostream();
raw_os_ostream(std::ostream &O) : raw_ostream(true), OS(O) {}
/// tell - Return the current offset with the stream.
uint64_t tell();
@ -395,8 +394,7 @@ class raw_string_ostream : public raw_ostream {
/// counting the bytes currently in the buffer.
virtual uint64_t current_pos() { return OS.size(); }
public:
explicit raw_string_ostream(std::string &O) : OS(O) {}
~raw_string_ostream();
explicit raw_string_ostream(std::string &O) : raw_ostream(true), OS(O) {}
/// tell - Return the current offset with the stream.
uint64_t tell() { return OS.size() + GetNumBytesInBuffer(); }
@ -422,8 +420,8 @@ class raw_svector_ostream : public raw_ostream {
/// counting the bytes currently in the buffer.
virtual uint64_t current_pos();
public:
explicit raw_svector_ostream(SmallVectorImpl<char> &O) : OS(O) {}
~raw_svector_ostream();
explicit raw_svector_ostream(SmallVectorImpl<char> &O)
: raw_ostream(true), OS(O) {}
/// tell - Return the current offset with the stream.
uint64_t tell();

12
llvm/lib/Support/raw_ostream.cpp
View File

@ -441,10 +441,6 @@ raw_ostream &llvm::nulls() {
// raw_os_ostream
//===----------------------------------------------------------------------===//
raw_os_ostream::~raw_os_ostream() {
flush();
}
void raw_os_ostream::write_impl(const char *Ptr, size_t Size) {
OS.write(Ptr, Size);
}
@ -459,10 +455,6 @@ uint64_t raw_os_ostream::tell() {
// raw_string_ostream
//===----------------------------------------------------------------------===//
raw_string_ostream::~raw_string_ostream() {
flush();
}
void raw_string_ostream::write_impl(const char *Ptr, size_t Size) {
OS.append(Ptr, Size);
}
@ -471,10 +463,6 @@ void raw_string_ostream::write_impl(const char *Ptr, size_t Size) {
// raw_svector_ostream
//===----------------------------------------------------------------------===//
raw_svector_ostream::~raw_svector_ostream() {
flush();
}
void raw_svector_ostream::write_impl(const char *Ptr, size_t Size) {
OS.append(Ptr, Ptr + Size);
}