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Changes to fix buffering that I forgot to commit with previous patch.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94222 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2010-01-22 21:16:10 +00:00
parent 965df54254
commit 14ca177beb
3 changed files with 18 additions and 8 deletions
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13
lib/Support/raw_ostream.cpp
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@@ -562,11 +562,14 @@ raw_svector_ostream::~raw_svector_ostream() {
flush();
}
/// clear - Flush the stream and clear the underlying vector.
void raw_svector_ostream::clear() {
if (GetNumBytesInBuffer() == 0) flush();
OS.clear();
/// resync - This is called when the SmallVector we're appending to is changed
/// outside of the raw_svector_ostream's control. It is only safe to do this
/// if the raw_svector_ostream has previously been flushed.
void raw_svector_ostream::resync() {
assert(GetNumBytesInBuffer() == 0 && "Didn't flush before mutating vector");
if (OS.capacity() - OS.size() < 64)
OS.reserve(OS.capacity() * 2);
SetBuffer(OS.end(), OS.capacity() - OS.size());
}