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Add method raw_fd_ostream::seek() for random access within a file.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63044 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Ted Kremenek 2009-01-26 21:42:04 +00:00
parent 4699934647
commit 9c27886dd5
2 changed files with 11 additions and 1 deletions
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4
include/llvm/Support/raw_ostream.h
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@ -182,6 +182,10 @@ public:
uint64_t tell() { uint64_t tell() {
return pos + (OutBufCur - OutBufStart); return pos + (OutBufCur - OutBufStart);
} }
/// seek - Flushes the stream and repositions the underlying file descriptor
/// positition to the offset specified from the beginning of the file.
uint64_t seek(uint64_t off);
}; };
/// raw_stdout_ostream - This is a stream that always prints to stdout. /// raw_stdout_ostream - This is a stream that always prints to stdout.

6
lib/Support/raw_ostream.cpp
View File

@ -255,6 +255,12 @@ void raw_fd_ostream::close() {
FD = -1; FD = -1;
} }
uint64_t raw_fd_ostream::seek(uint64_t off) {
flush();
pos = lseek(FD, off, SEEK_SET);
return pos;
}
//===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===//
// raw_stdout/err_ostream // raw_stdout/err_ostream
//===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===//