mirror of
https://github.com/RPCS3/llvm.git
synced 2024-12-19 01:48:34 +00:00
d09bef4d46
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9564 91177308-0d34-0410-b5e6-96231b3b80d8
89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
/*===-- 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>
|
|
#include <stdlib.h>
|
|
|
|
static char *SavedArgs = 0;
|
|
static unsigned SavedArgsLength = 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) {
|
|
unsigned Length, i;
|
|
if (SavedArgs || !argv) return; /* This can be called multiple times */
|
|
|
|
for (Length = 0, i = 0; i != (unsigned)argc; ++i)
|
|
Length += strlen(argv[i])+1;
|
|
|
|
SavedArgs = (char*)malloc(Length);
|
|
for (Length = 0, i = 0; i != (unsigned)argc; ++i) {
|
|
unsigned Len = strlen(argv[i]);
|
|
memcpy(SavedArgs+Length, argv[i], Len);
|
|
Length += Len;
|
|
SavedArgs[Length++] = ' ';
|
|
}
|
|
|
|
SavedArgsLength = Length;
|
|
}
|
|
|
|
|
|
/* 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. */
|
|
{
|
|
int PTy = Arguments;
|
|
int Zeros = 0;
|
|
write(OutFile, &PTy, sizeof(int));
|
|
write(OutFile, &SavedArgsLength, sizeof(unsigned));
|
|
write(OutFile, SavedArgs, SavedArgsLength);
|
|
/* Pad out to a multiple of four bytes */
|
|
if (SavedArgsLength & 3)
|
|
write(OutFile, &Zeros, 4-(SavedArgsLength&3));
|
|
}
|
|
}
|
|
|
|
/* Write out this record! */
|
|
PTy = PT;
|
|
write(OutFile, &PTy, sizeof(int));
|
|
write(OutFile, &NumElements, sizeof(unsigned));
|
|
write(OutFile, Start, NumElements*sizeof(unsigned));
|
|
}
|