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/*
* KMP_IO.c -- RTL IO
*/
//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.txt for details.
//
//===----------------------------------------------------------------------===//
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <stdarg.h>
#include <string.h>
#ifndef __ABSOFT_WIN
# include <sys/types.h>
#endif
#include "kmp_os.h"
#include "kmp_lock.h"
#include "kmp_str.h"
#include "kmp_io.h"
#include "kmp.h" // KMP_GTID_DNE, __kmp_debug_buf, etc
#if KMP_OS_WINDOWS
# pragma warning( push )
# pragma warning( disable: 271 310 )
# include <windows.h>
# pragma warning( pop )
#endif
/* ------------------------------------------------------------------------ */
/* ------------------------------------------------------------------------ */
kmp_bootstrap_lock_t __kmp_stdio_lock = KMP_BOOTSTRAP_LOCK_INITIALIZER( __kmp_stdio_lock ); /* Control stdio functions */
kmp_bootstrap_lock_t __kmp_console_lock = KMP_BOOTSTRAP_LOCK_INITIALIZER( __kmp_console_lock ); /* Control console initialization */
#if KMP_OS_WINDOWS
# ifdef KMP_DEBUG
/* __kmp_stdout is used only for dev build */
static HANDLE __kmp_stdout = NULL;
# endif
static HANDLE __kmp_stderr = NULL;
static int __kmp_console_exists = FALSE;
static kmp_str_buf_t __kmp_console_buf;
static int
is_console( void )
{
char buffer[ 128 ];
DWORD rc = 0;
DWORD err = 0;
// Try to get console title.
SetLastError( 0 );
// GetConsoleTitle does not reset last error in case of success or short buffer,
// so we need to clear it explicitly.
rc = GetConsoleTitle( buffer, sizeof( buffer ) );
if ( rc == 0 ) {
// rc == 0 means getting console title failed. Let us find out why.
err = GetLastError();
// err == 0 means buffer too short (we suppose console exists).
// In Window applications we usually have err == 6 (invalid handle).
}; // if
return rc > 0 || err == 0;
}
void
__kmp_close_console( void )
{
/* wait until user presses return before closing window */
/* TODO only close if a window was opened */
if( __kmp_console_exists ) {
#ifdef KMP_DEBUG
/* standard out is used only in dev build */
__kmp_stdout = NULL;
#endif
__kmp_stderr = NULL;
__kmp_str_buf_free( &__kmp_console_buf );
__kmp_console_exists = FALSE;
}
}
/* For windows, call this before stdout, stderr, or stdin are used.
* It opens a console window and starts processing */
static void
__kmp_redirect_output( void )
{
__kmp_acquire_bootstrap_lock( &__kmp_console_lock );
if( ! __kmp_console_exists ) {
#ifdef KMP_DEBUG
/* standard out is used only in dev build */
HANDLE ho;
#endif
HANDLE he;
__kmp_str_buf_init( &__kmp_console_buf );
AllocConsole();
// We do not check the result of AllocConsole because
// 1. the call is harmless
// 2. it is not clear how to communicate failue
// 3. we will detect failure later when we get handle(s)
#ifdef KMP_DEBUG
ho = GetStdHandle( STD_OUTPUT_HANDLE );
if ( ho == INVALID_HANDLE_VALUE || ho == NULL ) {
DWORD err = GetLastError();
// TODO: output error somehow (maybe message box)
__kmp_stdout = NULL;
} else {
__kmp_stdout = ho; // temporary code, need new global for ho
}
#endif
he = GetStdHandle( STD_ERROR_HANDLE );
if ( he == INVALID_HANDLE_VALUE || he == NULL ) {
DWORD err = GetLastError();
// TODO: output error somehow (maybe message box)
__kmp_stderr = NULL;
} else {
__kmp_stderr = he; // temporary code, need new global
}
__kmp_console_exists = TRUE;
}
__kmp_release_bootstrap_lock( &__kmp_console_lock );
}
#else
#define __kmp_stderr (stderr)
#endif /* KMP_OS_WINDOWS */
void
__kmp_vprintf( enum kmp_io __kmp_io, char const * format, va_list ap )
{
#if KMP_OS_WINDOWS
if( !__kmp_console_exists ) {
__kmp_redirect_output();
}
if( ! __kmp_stderr && __kmp_io == kmp_err ) {
return;
}
#ifdef KMP_DEBUG
if( ! __kmp_stdout && __kmp_io == kmp_out ) {
return;
}
#endif
#endif /* KMP_OS_WINDOWS */
if ( __kmp_debug_buf && __kmp_debug_buffer != NULL ) {
int dc = ( __kmp_debug_buf_atomic ?
KMP_TEST_THEN_INC32( & __kmp_debug_count) : __kmp_debug_count++ )
% __kmp_debug_buf_lines;
char *db = & __kmp_debug_buffer[ dc * __kmp_debug_buf_chars ];
int chars = 0;
#ifdef KMP_DEBUG_PIDS
chars = KMP_SNPRINTF( db, __kmp_debug_buf_chars, "pid=%d: ", (kmp_int32)getpid() );
#endif
chars += KMP_VSNPRINTF( db, __kmp_debug_buf_chars, format, ap );
if ( chars + 1 > __kmp_debug_buf_chars ) {
if ( chars + 1 > __kmp_debug_buf_warn_chars ) {
#if KMP_OS_WINDOWS
DWORD count;
__kmp_str_buf_print( &__kmp_console_buf,
"OMP warning: Debugging buffer overflow; increase KMP_DEBUG_BUF_CHARS to %d\n",
chars + 1 );
WriteFile( __kmp_stderr, __kmp_console_buf.str, __kmp_console_buf.used, &count, NULL );
__kmp_str_buf_clear( &__kmp_console_buf );
#else
fprintf( __kmp_stderr,
"OMP warning: Debugging buffer overflow; increase KMP_DEBUG_BUF_CHARS to %d\n",
chars + 1 );
fflush( __kmp_stderr );
#endif
__kmp_debug_buf_warn_chars = chars + 1;
}
/* terminate string if overflow occurred */
db[ __kmp_debug_buf_chars - 2 ] = '\n';
db[ __kmp_debug_buf_chars - 1 ] = '\0';
}
} else {
#if KMP_OS_WINDOWS
DWORD count;
#ifdef KMP_DEBUG_PIDS
__kmp_str_buf_print( &__kmp_console_buf, "pid=%d: ",
(kmp_int32)getpid() );
#endif
__kmp_str_buf_vprint( &__kmp_console_buf, format, ap );
WriteFile(
__kmp_stderr,
__kmp_console_buf.str,
__kmp_console_buf.used,
&count,
NULL
);
__kmp_str_buf_clear( &__kmp_console_buf );
#else
#ifdef KMP_DEBUG_PIDS
fprintf( __kmp_stderr, "pid=%d: ", (kmp_int32)getpid() );
#endif
vfprintf( __kmp_stderr, format, ap );
fflush( __kmp_stderr );
#endif
}
}
void
__kmp_printf( char const * format, ... )
{
va_list ap;
va_start( ap, format );
__kmp_acquire_bootstrap_lock( & __kmp_stdio_lock );
__kmp_vprintf( kmp_err, format, ap );
__kmp_release_bootstrap_lock( & __kmp_stdio_lock );
va_end( ap );
}
void
__kmp_printf_no_lock( char const * format, ... )
{
va_list ap;
va_start( ap, format );
__kmp_vprintf( kmp_err, format, ap );
va_end( ap );
}
/* ------------------------------------------------------------------------ */
/* ------------------------------------------------------------------------ */
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