[PGO] Move buffer write callback to a common file
This is a NFC refactoring enabling code sharing by file writer.
llvm-svn: 256264
diff --git a/compiler-rt/lib/profile/InstrProfilingWriter.c b/compiler-rt/lib/profile/InstrProfilingWriter.c
index 4c9e679..8519891 100644
--- a/compiler-rt/lib/profile/InstrProfilingWriter.c
+++ b/compiler-rt/lib/profile/InstrProfilingWriter.c
@@ -9,6 +9,23 @@
#include "InstrProfiling.h"
#include "InstrProfilingInternal.h"
+#include <string.h>
+
+/* The buffer writer is reponsponsible in keeping writer state
+ * across the call.
+ */
+COMPILER_RT_VISIBILITY uint32_t llvmBufferWriter(ProfDataIOVec *IOVecs,
+ uint32_t NumIOVecs,
+ void **WriterCtx) {
+ uint32_t I;
+ char **Buffer = (char **)WriterCtx;
+ for (I = 0; I < NumIOVecs; I++) {
+ size_t Length = IOVecs[I].ElmSize * IOVecs[I].NumElm;
+ memcpy(*Buffer, IOVecs[I].Data, Length);
+ *Buffer += Length;
+ }
+ return 0;
+}
COMPILER_RT_VISIBILITY int llvmWriteProfData(WriterCallback Writer,
void *WriterCtx,