InstrProf: Reorganize files; no functionality change

Move functions around to prepare for some other changes.

  - Merge InstrProfilingExtras.h with InstrProfiling.h.  There's no
    benefit to having these split.

  - Rename InstrProfilingExtras.c to InstrProfilingFile.c.

  - Split actual buffer writing code out of InstrProfiling.c into
    InstrProfilingBuffer.c.

  - Drive-by corrections of a couple of header comments.

<rdar://problem/15943240>

llvm-svn: 204497

1 files changed, 54 insertions, 0 deletions

diff --git a/compiler-rt/lib/profile/InstrProfilingBuffer.c b/compiler-rt/lib/profile/InstrProfilingBuffer.c
new file mode 100644
index 00000000000..7b662ca7dd9
--- /dev/null
+++ b/compiler-rt/lib/profile/InstrProfilingBuffer.c
@@ -0,0 +1,54 @@
+/*===- InstrProfilingBuffer.c - Write instrumentation to a memory buffer --===*\
+|*
+|*                     The LLVM Compiler Infrastructure
+|*
+|* This file is distributed under the University of Illinois Open Source
+|* License. See LICENSE.TXT for details.
+|*
+\*===----------------------------------------------------------------------===*/
+
+#include "InstrProfiling.h"
+#include <string.h>
+
+/* TODO: uint64_t __llvm_profile_get_size_for_buffer(void) */
+
+int __llvm_profile_write_buffer(FILE *OutputFile) {
+  const __llvm_profile_data *DataBegin = __llvm_profile_data_begin();
+  const __llvm_profile_data *DataEnd = __llvm_profile_data_end();
+  const uint64_t *CountersBegin = __llvm_profile_counters_begin();
+  const uint64_t *CountersEnd   = __llvm_profile_counters_end();
+  const char *NamesBegin = __llvm_profile_names_begin();
+  const char *NamesEnd   = __llvm_profile_names_end();
+
+  /* Calculate size of sections. */
+  const uint64_t DataSize = DataEnd - DataBegin;
+  const uint64_t CountersSize = CountersEnd - CountersBegin;
+  const uint64_t NamesSize = NamesEnd - NamesBegin;
+
+  /* Get rest of header data. */
+  const uint64_t Magic = __llvm_profile_get_magic();
+  const uint64_t Version = __llvm_profile_get_version();
+  const uint64_t CountersDelta = (uint64_t)CountersBegin;
+  const uint64_t NamesDelta = (uint64_t)NamesBegin;
+
+#define CHECK_fwrite(Data, Size, Length, File) \
+  do { if (fwrite(Data, Size, Length, File) != Length) return -1; } while (0)
+
+  /* Write the header. */
+  CHECK_fwrite(&Magic,         sizeof(uint64_t), 1, OutputFile);
+  CHECK_fwrite(&Version,       sizeof(uint64_t), 1, OutputFile);
+  CHECK_fwrite(&DataSize,      sizeof(uint64_t), 1, OutputFile);
+  CHECK_fwrite(&CountersSize,  sizeof(uint64_t), 1, OutputFile);
+  CHECK_fwrite(&NamesSize,     sizeof(uint64_t), 1, OutputFile);
+  CHECK_fwrite(&CountersDelta, sizeof(uint64_t), 1, OutputFile);
+  CHECK_fwrite(&NamesDelta,    sizeof(uint64_t), 1, OutputFile);
+
+  /* Write the data. */
+  CHECK_fwrite(DataBegin, sizeof(__llvm_profile_data), DataSize, OutputFile);
+  CHECK_fwrite(CountersBegin, sizeof(uint64_t), CountersSize, OutputFile);
+  CHECK_fwrite(NamesBegin, sizeof(char), NamesSize, OutputFile);
+
+#undef CHECK_fwrite
+
+   return 0;
+}