[llvm-commits] CVS: llvm/runtime/libprofile/BlockProfiling.c CommonProfiling.c FunctionProfiling.c Makefile Profiling.h exported_symbols.lst
Chris Lattner
lattner at cs.uiuc.edu
Tue Oct 28 12:58:01 PST 2003
Changes in directory llvm/runtime/libprofile:
BlockProfiling.c added (r1.1)
CommonProfiling.c added (r1.1)
FunctionProfiling.c added (r1.1)
Makefile added (r1.1)
Profiling.h added (r1.1)
exported_symbols.lst added (r1.1)
---
Log message:
Initial checkin of function and block profiling runtime library
---
Diffs of the changes: (+220 -0)
Index: llvm/runtime/libprofile/BlockProfiling.c
diff -c /dev/null llvm/runtime/libprofile/BlockProfiling.c:1.1
*** /dev/null Tue Oct 28 12:57:01 2003
--- llvm/runtime/libprofile/BlockProfiling.c Tue Oct 28 12:56:51 2003
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*** 0 ****
--- 1,43 ----
+ /*===-- BlockProfiling.c - Support library for block profiling ------------===*\
+ |*
+ |* The LLVM Compiler Infrastructure
+ |*
+ |* This file was developed by the LLVM research group and is distributed under
+ |* the University of Illinois Open Source License. See LICENSE.TXT for details.
+ |*
+ |*===----------------------------------------------------------------------===*|
+ |*
+ |* This file implements the call back routines for the block profiling
+ |* instrumentation pass. This should be used with the -insert-block-profiling
+ |* LLVM pass.
+ |*
+ \*===----------------------------------------------------------------------===*/
+
+ #include "Profiling.h"
+ #include <stdlib.h>
+
+ static unsigned *ArrayStart;
+ static unsigned NumElements;
+
+ /* BlockProfAtExitHandler - When the program exits, just write out the profiling
+ * data.
+ */
+ static void BlockProfAtExitHandler() {
+ /* Note that if this were doing something more intellegent with the
+ instrumentation, that we could do some computation here to expand what we
+ collected into simple block profiles. Since we directly count each block,
+ */
+ write_profiling_data(Block, ArrayStart, NumElements);
+ }
+
+
+ /* llvm_start_block_profiling - This is the main entry point of the block
+ * profiling library. It is responsible for setting up the atexit handler.
+ */
+ void llvm_start_block_profiling(int argc, const char **argv,
+ unsigned *arrayStart, unsigned numElements) {
+ save_arguments(argc, argv);
+ ArrayStart = arrayStart;
+ NumElements = numElements;
+ atexit(BlockProfAtExitHandler);
+ }
Index: llvm/runtime/libprofile/CommonProfiling.c
diff -c /dev/null llvm/runtime/libprofile/CommonProfiling.c:1.1
*** /dev/null Tue Oct 28 12:57:01 2003
--- llvm/runtime/libprofile/CommonProfiling.c Tue Oct 28 12:56:51 2003
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*** 0 ****
--- 1,82 ----
+ /*===-- CommonProfiling.c - Profiling support library support -------------===*\
+ |*
+ |* The LLVM Compiler Infrastructure
+ |*
+ |* This file was developed by the LLVM research group and is distributed under
+ |* the University of Illinois Open Source License. See LICENSE.TXT for details.
+ |*
+ |*===----------------------------------------------------------------------===*|
+ |*
+ |* This file implements functions used by the various different types of
+ |* profiling implementations.
+ |*
+ \*===----------------------------------------------------------------------===*/
+
+ #include "Profiling.h"
+ #include <sys/types.h>
+ #include <sys/stat.h>
+ #include <fcntl.h>
+ #include <stdio.h>
+ #include <string.h>
+ #include <unistd.h>
+
+ static int SavedArgc = 0;
+ static const char **SavedArgv = 0;
+
+ /* save_arguments - Save argc and argv as passed into the program for the file
+ * we output.
+ */
+ void save_arguments(int argc, const char **argv) {
+ if (SavedArgv) return; /* This can be called multiple times */
+
+ /* FIXME: this should copy the arguments out of argv into a string of our own,
+ * because the program might modify the arguments!
+ */
+ SavedArgc = argc;
+ SavedArgv = argv;
+ }
+
+
+
+
+ /* write_profiling_data - Write a raw block of profiling counters out to the
+ * llvmprof.out file. Note that we allow programs to be instrumented with
+ * multiple different kinds of instrumentation. For this reason, this function
+ * may be called more than once.
+ */
+ void write_profiling_data(enum ProfilingType PT, unsigned *Start,
+ unsigned NumElements) {
+ static int OutFile = -1;
+ int PTy;
+
+ /* If this is the first time this function is called, open the output file for
+ * appending, creating it if it does not already exist.
+ */
+ if (OutFile == -1) {
+ off_t Offset;
+ OutFile = open("llvmprof.out", O_CREAT | O_WRONLY | O_APPEND, 0666);
+ if (OutFile == -1) {
+ perror("LLVM profiling: while opening 'llvmprof.out'");
+ return;
+ }
+
+ /* Output the command line arguments to the file. */
+ {
+ const char *Args = "";
+ int PTy = Arguments;
+ int ArgLength = strlen(Args);
+ int Zeros = 0;
+ write(OutFile, &PTy, sizeof(int));
+ write(OutFile, &ArgLength, sizeof(int));
+ write(OutFile, Args, ArgLength);
+ /* Pad out to a multiple of four bytes */
+ if (ArgLength & 3)
+ write(OutFile, &Zeros, 4-(ArgLength&3));
+ }
+ }
+
+ /* Write out this record! */
+ PTy = PT;
+ write(OutFile, &PTy, sizeof(int));
+ write(OutFile, Start, NumElements*sizeof(unsigned));
+ }
Index: llvm/runtime/libprofile/FunctionProfiling.c
diff -c /dev/null llvm/runtime/libprofile/FunctionProfiling.c:1.1
*** /dev/null Tue Oct 28 12:57:01 2003
--- llvm/runtime/libprofile/FunctionProfiling.c Tue Oct 28 12:56:51 2003
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*** 0 ****
--- 1,41 ----
+ /*===-- FunctionProfiling.c - Support library for function profiling ------===*\
+ |*
+ |* The LLVM Compiler Infrastructure
+ |*
+ |* This file was developed by the LLVM research group and is distributed under
+ |* the University of Illinois Open Source License. See LICENSE.TXT for details.
+ |*
+ |*===----------------------------------------------------------------------===*|
+ |*
+ |* This file implements the call back routines for the function profiling
+ |* instrumentation pass. This should be used with the
+ |* -insert-function-profiling LLVM pass.
+ |*
+ \*===----------------------------------------------------------------------===*/
+
+ #include "Profiling.h"
+ #include <stdlib.h>
+
+ static unsigned *ArrayStart;
+ static unsigned NumElements;
+
+ /* FuncProfAtExitHandler - When the program exits, just write out the profiling
+ * data.
+ */
+ static void FuncProfAtExitHandler() {
+ /* Just write out the data we collected.
+ */
+ write_profiling_data(Function, ArrayStart, NumElements);
+ }
+
+
+ /* llvm_start_func_profiling - This is the main entry point of the function
+ * profiling library. It is responsible for setting up the atexit handler.
+ */
+ void llvm_start_func_profiling(int argc, const char **argv,
+ unsigned *arrayStart, unsigned numElements) {
+ save_arguments(argc, argv);
+ ArrayStart = arrayStart;
+ NumElements = numElements;
+ atexit(FuncProfAtExitHandler);
+ }
Index: llvm/runtime/libprofile/Makefile
diff -c /dev/null llvm/runtime/libprofile/Makefile:1.1
*** /dev/null Tue Oct 28 12:57:01 2003
--- llvm/runtime/libprofile/Makefile Tue Oct 28 12:56:51 2003
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*** 0 ****
--- 1,17 ----
+ ##===- runtime/libprofile/Makefile -------------------------*- Makefile -*-===##
+ #
+ # The LLVM Compiler Infrastructure
+ #
+ # This file was developed by the LLVM research group and is distributed under
+ # the University of Illinois Open Source License. See LICENSE.TXT for details.
+ #
+ ##===----------------------------------------------------------------------===##
+ LEVEL = ../..
+ BYTECODE_LIBRARY=1
+ SHARED_LIBRARY=1
+ #DONT_BUILD_RELINKED=1
+ LIBRARYNAME=profile_rt
+ EXPORTED_SYMBOL_FILE = $(SourceDir)/exported_symbols.lst
+
+ include $(LEVEL)/Makefile.common
+
Index: llvm/runtime/libprofile/Profiling.h
diff -c /dev/null llvm/runtime/libprofile/Profiling.h:1.1
*** /dev/null Tue Oct 28 12:57:01 2003
--- llvm/runtime/libprofile/Profiling.h Tue Oct 28 12:56:51 2003
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*** 0 ****
--- 1,34 ----
+ /*===-- Profiling.h - Profiling support library support routines --*- C -*-===*\
+ |*
+ |* The LLVM Compiler Infrastructure
+ |*
+ |* This file was developed by the LLVM research group and is distributed under
+ |* the University of Illinois Open Source License. See LICENSE.TXT for details.
+ |*
+ |*===----------------------------------------------------------------------===*|
+ |*
+ |* This file defines functions shared by the various different profiling
+ |* implementations.
+ |*
+ \*===----------------------------------------------------------------------===*/
+
+ #ifndef PROFILING_H
+ #define PROFILING_H
+
+ /* save_arguments - Save argc and argv as passed into the program for the file
+ * we output.
+ */
+ void save_arguments(int argc, const char **argv);
+
+ enum ProfilingType {
+ Arguments = 1, /* The command line argument block */
+ Function = 2, /* Function profiling information */
+ Block = 3, /* Block profiling information */
+ Edge = 4, /* Edge profiling information */
+ Path = 5 /* Path profiling information */
+ };
+
+ void write_profiling_data(enum ProfilingType PT, unsigned *Start,
+ unsigned NumElements);
+
+ #endif
Index: llvm/runtime/libprofile/exported_symbols.lst
diff -c /dev/null llvm/runtime/libprofile/exported_symbols.lst:1.1
*** /dev/null Tue Oct 28 12:57:01 2003
--- llvm/runtime/libprofile/exported_symbols.lst Tue Oct 28 12:56:51 2003
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*** 0 ****
--- 1,3 ----
+
+ llvm_start_func_profiling
+ llvm_start_block_profiling
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