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os_base.c
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os_base.c
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/* File: "os_base.c", Time-stamp: <2009-03-18 09:25:14 feeley> */
/* Copyright (c) 1994-2009 by Marc Feeley, All Rights Reserved. */
/*
* This module implements the most basic operating system services.
*/
#define ___INCLUDED_FROM_OS_BASE
#define ___VERSION 405002
#include "gambit.h"
#include "os_base.h"
#include "setup.h"
/*---------------------------------------------------------------------------*/
___base_module ___base_mod =
{
0
#ifdef ___DEBUG
,
0,
0,
0
#ifdef ___DEBUG_ALLOC_MEM_TRACE
,
0,
0
#endif
#endif
#ifdef ___BASE_MODULE_INIT
___BASE_MODULE_INIT
#endif
};
/*---------------------------------------------------------------------------*/
/* Standard I/O emulation */
___FILE *___fopen
___P((const char *path,
const char *mode),
(path,
mode)
const char *path;
const char *mode;)
{
return fopen (path, mode);
}
int ___fclose
___P((___FILE *stream),
(stream)
___FILE *stream;)
{
return fclose (stream);
}
size_t ___fread
___P((void *ptr,
size_t size,
size_t nmemb,
___FILE *stream),
(ptr,
size,
nmemb,
stream)
void *ptr;
size_t size;
size_t nmemb;
___FILE *stream;)
{
return fread (ptr, size, nmemb, stream);
}
size_t ___fwrite
___P((const void *ptr,
size_t size,
size_t nmemb,
___FILE *stream),
(ptr,
size,
nmemb,
stream)
const void *ptr;
size_t size;
size_t nmemb;
___FILE *stream;)
{
return fwrite (ptr, size, nmemb, stream);
}
int ___fflush
___P((___FILE *stream),
(stream)
___FILE *stream;)
{
return fflush (stream);
}
#ifdef ___DEBUG
#include <stdarg.h>
int ___printf
___P((const char *format,
...),
(format, ...)
const char *format;)
{
va_list ap;
int result;
___FILE *stream = ___base_mod.debug;
if (stream == NULL)
stream = ___stderr;
va_start (ap, format);
result = vfprintf (stream, format, ap);
va_end (ap);
___fflush (stream);
return result;
}
#endif
/*---------------------------------------------------------------------------*/
/* Memory allocation. */
void *___alloc_mem
___P((unsigned long bytes),
(bytes)
unsigned long bytes;)
{
void *ptr;
#ifdef ___DEBUG
#ifdef USE_WIN32
InterlockedIncrement (&___base_mod.alloc_mem_calls);
#else
___base_mod.alloc_mem_calls++;
#endif
#endif
#ifdef USE_TempNewHandle
if (___base_mod.setup && ___base_mod.has_OSDispatch)
{
OSErr e;
Ptr p;
Handle h = TempNewHandle (sizeof (Handle) + bytes, &err);
if (e != noErr || h == 0)
return 0;
HLock (h);
p = *h;
*___CAST(Handle*,p) = h;
ptr = p + sizeof (Handle);
}
else
ptr = malloc (bytes);
#else
ptr = malloc (bytes);
#endif
return ptr;
}
void ___free_mem
___P((void *ptr),
(ptr)
void *ptr;)
{
#ifdef ___DEBUG
#ifdef ___DEBUG_ALLOC_MEM_TRACE
___printf ("%p FREED\n", ptr);
#endif
#endif
#ifdef ___DEBUG
#ifdef USE_WIN32
InterlockedIncrement (&___base_mod.free_mem_calls);
#else
___base_mod.free_mem_calls++;
#endif
#endif
#ifdef USE_TempNewHandle
if (___base_mod.setup && ___base_mod.has_OSDispatch)
{
OSErr e;
Handle h = *___CAST(Handle*,___CAST(Ptr,ptr) - sizeof (Handle));
HUnlock (h);
TempDisposeHandle (h, &e);
}
else
free (ptr);
#else
free (ptr);
#endif
}
#ifdef ___DEBUG
#ifdef ___DEBUG_ALLOC_MEM_TRACE
void * ___alloc_mem_debug
___P((unsigned long bytes,
int lineno,
char *file),
(bytes,
lineno,
file)
unsigned long bytes;
int lineno;
char *file;)
{
void *ptr;
ptr = ___alloc_mem (bytes);
if (file != 0)
___printf ("%p (%lu bytes) ALLOCATED AT \"%s\"@%d.1\n",
ptr,
bytes,
file,
lineno);
else
___printf ("%p (%lu bytes) ALLOCATED\n", ptr, bytes);
return ptr;
}
#endif
#endif
/*---------------------------------------------------------------------------*/
/* Program startup */
/*
* ___main_char, ___main_UCS_2, and ___winmain are variants of main
* entry points which differ in the format of the arguments; the first
* two are always compiled in since they could be useful on all
* systems for embedding of Gambit.
*/
/* To keep command line and runtime flag information around: */
___program_startup_info_struct ___program_startup_info =
{
0, /* argument vector */
0 /* runtime flag string */
#ifdef ___OS_WIN32
,
NULL,
NULL,
NULL,
0
#endif
};
___EXP_FUNC(int,___main_char)
___P((int argc,
char *argv[],
___mod_or_lnk (*linker)(___global_state_struct*),
char *script_line),
(argc,
argv,
linker,
script_line)
int argc;
char *argv[];
___mod_or_lnk (*linker)();
char *script_line;)
{
int result;
if (___setup_base_module () != ___FIX(___NO_ERR))
result = ___EXIT_CODE_OSERR;
else
{
if (___NONNULLCHARSTRINGLIST_to_NONNULLUCS_2STRINGLIST
(argv,
&___program_startup_info.argv)
!= ___FIX(___NO_ERR))
result = ___EXIT_CODE_SOFTWARE;
else
{
if (___CHARSTRING_to_UCS_2STRING
(script_line,
&___program_startup_info.script_line)
!= ___FIX(___NO_ERR))
result = ___EXIT_CODE_SOFTWARE;
else
{
result = ___main (linker);
___free_UCS_2STRING (___program_startup_info.script_line);
}
___free_NONNULLUCS_2STRINGLIST (___program_startup_info.argv);
}
___cleanup_base_module ();
}
return result;
}
___EXP_FUNC(int,___main_UCS_2)
___P((int argc,
___UCS_2STRING argv[],
___mod_or_lnk (*linker)(___global_state_struct*),
char *script_line),
(argc,
argv,
linker,
script_line)
int argc;
___UCS_2STRING argv[];
___mod_or_lnk (*linker)();
char *script_line;)
{
int result;
if (___setup_base_module () != ___FIX(___NO_ERR))
result = ___EXIT_CODE_OSERR;
else
{
___program_startup_info.argv = argv;
if (___CHARSTRING_to_UCS_2STRING
(script_line,
&___program_startup_info.script_line)
!= ___FIX(___NO_ERR))
result = ___EXIT_CODE_SOFTWARE;
else
{
result = ___main (linker);
___free_UCS_2STRING (___program_startup_info.script_line);
}
___cleanup_base_module ();
}
return result;
}
#ifdef ___OS_WIN32
#ifdef _UNICODE
#define ___CMDLINE_CE_SELECT(latin1,utf8,ucs2,ucs4,wchar,native) ucs2
#else
#define ___CMDLINE_CE_SELECT(latin1,utf8,ucs2,ucs4,wchar,native) native
#endif
___HIDDEN ___SCMOBJ parse_windows_command_line
___P((___STRING_TYPE(___CMDLINE_CE_SELECT) cmdline,
___UCS_2STRING **argv_return),
(cmdline,
argv_return)
___STRING_TYPE(___CMDLINE_CE_SELECT) cmdline;
___UCS_2STRING **argv_return;)
{
int argc = 0;
___UCS_2STRING *argv = 0;
___UCS_2STRING args = 0;
int total_arg_len = 0;
int pass;
for (pass=0; pass<2; pass++)
{
int in_double_quotes;
int nb_backslashes;
___STRING_TYPE(___CMDLINE_CE_SELECT) p;
___CHAR_TYPE(___CMDLINE_CE_SELECT) c;
if (pass != 0)
{
if ((argv = ___CAST(___UCS_2STRING*,
___alloc_mem ((argc + 1)
* sizeof (___UCS_2STRING)))) == 0)
return ___FIX(___HEAP_OVERFLOW_ERR);
if (total_arg_len > 0)
{
if ((args = ___CAST(___UCS_2STRING,
___alloc_mem (total_arg_len
* sizeof (___UCS_2)))) == 0)
{
___free_mem (argv);
return ___FIX(___HEAP_OVERFLOW_ERR);
}
}
}
total_arg_len = 0;
argc = 0;
p = cmdline;
for (;;)
{
while ((c = *p) != '\0' && c <= ' ')
p++;
if (c == '\0')
break;
in_double_quotes = 0;
nb_backslashes = 0;
if (pass != 0)
argv[argc] = args;
while ((c = *p) != '\0' && (in_double_quotes || c > ' '))
{
if (c == '\\')
nb_backslashes++;
else
{
if (c != '"')
nb_backslashes = (nb_backslashes<<1) + 1;
else
{
if ((nb_backslashes & 1) == 0)
in_double_quotes ^= 1;
#ifndef PROCESS_PROGRAM_LIKE_OTHER_ARGS
if (argc == 0)
nb_backslashes = (nb_backslashes<<1) + 1;
#endif
}
total_arg_len += ((nb_backslashes+1)>>1);
if (pass != 0)
{
while (nb_backslashes > 1)
{
*args++ = '\\';
nb_backslashes -= 2;
}
if (nb_backslashes != 0)
*args++ = c;
}
nb_backslashes = 0;
}
p++;
}
total_arg_len += nb_backslashes+1;
if (pass != 0)
{
while (nb_backslashes-- > 0)
*args++ = '\\';
*args++ = '\0';
}
argc++;
}
}
argv[argc] = 0;
*argv_return = argv;
return ___FIX(___NO_ERR);
}
___HIDDEN void free_windows_command_line
___P((___UCS_2STRING *argv),
(argv)
___UCS_2STRING *argv;)
{
if (argv[0] != 0)
___free_mem (argv[0]);
___free_mem (argv);
}
___EXP_FUNC(int,___winmain)
___P((HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow,
___mod_or_lnk (*linker)(___global_state_struct*),
char *script_line),
(hInstance,
hPrevInstance,
lpCmdLine,
nCmdShow,
linker,
script_line)
HINSTANCE hInstance;
HINSTANCE hPrevInstance;
LPSTR lpCmdLine;
int nCmdShow;
___mod_or_lnk (*linker)(___global_state_struct*);
char *script_line;)
{
int result;
if (___setup_base_module () != ___FIX(___NO_ERR))
result = ___EXIT_CODE_OSERR;
else
{
/*********************************/
#if 0
AllocConsole( ); /* Create Console Window */
freopen(_T("CONIN$"),_T("rb"),stdin); /* reopen stdin handle as console window input */
freopen(_T("CONOUT$"),_T("wb"),stdout); /* reopen stout handle as console window output */
freopen(_T("CONOUT$"),_T("wb"),stderr); /* reopen stderr handle as console window output */
#endif
if (parse_windows_command_line
(GetCommandLine (),
&___program_startup_info.argv)
!= ___FIX(___NO_ERR))
result = ___EXIT_CODE_SOFTWARE;
else
{
if (___CHARSTRING_to_UCS_2STRING
(script_line,
&___program_startup_info.script_line)
!= ___FIX(___NO_ERR))
result = ___EXIT_CODE_SOFTWARE;
else
{
___program_startup_info.hInstance = hInstance;
___program_startup_info.hPrevInstance = hPrevInstance;
___program_startup_info.lpCmdLine = lpCmdLine;
___program_startup_info.nCmdShow = nCmdShow;
result = ___main (linker);
___free_UCS_2STRING (___program_startup_info.script_line);
}
free_windows_command_line (___program_startup_info.argv);
}
___cleanup_base_module ();
}
return result;
}
#endif
/*---------------------------------------------------------------------------*/
/* Process termination. */
void ___exit_process
___P((int status),
(status)
int status;)
{
exit (status);
}
/*---------------------------------------------------------------------------*/
/* Error handling. */
void ___fatal_error
___P((char **msgs),
(msgs)
char **msgs;)
{
if (___setup_params.fatal_error != 0)
___setup_params.fatal_error (msgs);
else
{
char *new_msgs[100];
int i;
new_msgs[0] = "*** FATAL ERROR -- ";
for (i=0; i<100-2; i++)
{
if (msgs[i] == 0)
break;
new_msgs[i+1] = msgs[i];
}
new_msgs[i+1] = "\n";
new_msgs[i+2] = 0;
___display_error (new_msgs);
}
___exit_process (___EXIT_CODE_SOFTWARE);
}
void ___display_error
___P((char **msgs),
(msgs)
char **msgs;)
{
if (___setup_params.display_error != 0)
___setup_params.display_error (msgs);
else if (___DEBUG_SETTINGS_LEVEL(___setup_params.debug_settings) > 0)
{
while (*msgs != 0)
{
char *msg = *msgs++;
int len = 0;
while (msg[len] != '\0')
len++;
___fwrite (msg, 1, len, ___stderr); /* ignore error */
}
}
}
/* Conversion of OS error codes to Scheme error codes. */
___HIDDEN char *error_number_to_string
___P((int code),
(code)
int code;)
{
static char txt[] = "Error code ";
static char buf[sizeof (txt) + 20]; /* -2^63 is 20 characters in decimal */
char *p1 = buf + sizeof (buf);
char *p2;
int n;
if (code < 0)
n = code;
else
n = -code;
*--p1 = '\0';
do
{
*--p1 = '0' + (n/10 * 10 - n);
n /= 10;
} while (n != 0);
if (code < 0)
*--p1 = '-';
p2 = txt + sizeof (txt) - 1;
while (p2 != txt)
*--p1 = *--p2;
return p1;
}
#ifdef USE_errno
___HIDDEN char *errno_to_string
___P((int code),
(code)
int code;)
{
#ifdef USE_strerror
return strerror (code);
#else
return error_number_to_string (code);
#endif
}
#ifdef ___DEBUG
___SCMOBJ ___err_code_from_errno_debug
___P((int lineno,
char *file),
(lineno,
file)
int lineno;
char *file;)
#else
___SCMOBJ ___err_code_from_errno ___PVOID
#endif
{
int e = errno;
#ifdef ___DEBUG
___printf ("*** OS ERROR AT \"%s\"@%d.1 -- errno=%d (%s)\n",
file,
lineno,
e,
errno_to_string (e));
#endif
if (e == 0)
return ___FIX(___UNKNOWN_ERR);
return ___FIX(___ERRNO_ERR(e));
}
#endif
#ifdef USE_h_errno
___HIDDEN const char *h_errno_to_string
___P((int code),
(code)
int code;)
{
#ifdef USE_hstrerror
return hstrerror (code);
#else
static char *h_errno_messages[] =
{
"Resolver Error 0 (no error)",
"Unknown host",
"Host name lookup failure",
"Unknown server error",
"No address associated with name"
};
if (code >= 0 && code <= 4)
return h_errno_messages[code];
return "Unknown resolver error";
#endif
}
#ifdef ___DEBUG
___SCMOBJ ___err_code_from_h_errno_debug
___P((int lineno,
char *file),
(lineno,
file)
int lineno;
char *file;)
#else
___SCMOBJ ___err_code_from_h_errno ___PVOID
#endif
{
int e = h_errno;
#ifdef ___DEBUG
___printf ("*** OS ERROR AT \"%s\"@%d.1 -- h_errno=%d (%s)\n",
file,
lineno,
e,
h_errno_to_string (e));
#endif
if (e == NETDB_INTERNAL)
return err_code_from_errno ();
#ifdef NETDB_WORKS_PROPERLY
if (e == NETDB_SUCCESS)
return ___FIX(___UNKNOWN_ERR);
#else
/*
* Linux sometimes returns NETDB_SUCCESS when it should return
* NETDB_INTERNAL.
*/
if (e == NETDB_SUCCESS)
return err_code_from_errno ();
#endif
return ___FIX(___H_ERRNO_ERR(e));
}
#endif
#ifdef USE_GetLastError
#ifdef ___DEBUG
___SCMOBJ ___err_code_from_GetLastError_debug
___P((int lineno,
char *file),
(lineno,
file)
int lineno;
char *file;)
#else
___SCMOBJ ___err_code_from_GetLastError ___PVOID
#endif
{
DWORD e = GetLastError ();
#ifdef ___DEBUG
char buf[___ERR_MAX_LENGTH+1];
DWORD len = FormatMessageA
(FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_MAX_WIDTH_MASK,
NULL,
e,
MAKELANGID(LANG_NEUTRAL,SUBLANG_DEFAULT),
buf,
___ERR_MAX_LENGTH,
NULL);
___printf ("*** OS ERROR AT \"%s\"@%d.1 -- GetLastError=%d (%s)\n",
file,
lineno,
___CAST(int,e),
buf);
#endif
if (e == NO_ERROR)
return ___FIX(___UNKNOWN_ERR);
if (e == ERROR_FILE_NOT_FOUND || e == ERROR_PATH_NOT_FOUND)
return ___ERR_CODE_ENOENT;
return ___FIX(___WIN32_ERR(e));
}
#endif
#ifdef USE_WSAGetLastError
#ifdef ___DEBUG
___SCMOBJ ___err_code_from_WSAGetLastError_debug
___P((int lineno,
char *file),
(lineno,
file)
int lineno;
char *file;)
#else
___SCMOBJ ___err_code_from_WSAGetLastError ___PVOID
#endif
{
DWORD e = WSAGetLastError ();
#ifdef ___DEBUG
char buf[___ERR_MAX_LENGTH+1];
DWORD len = FormatMessageA
(FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_MAX_WIDTH_MASK,
NULL,
e,
MAKELANGID(LANG_NEUTRAL,SUBLANG_DEFAULT),
buf,
___ERR_MAX_LENGTH,
NULL);
___printf ("*** OS ERROR AT \"%s\"@%d.1 -- WSAGetLastError=%d (%s)\n",
file,
lineno,
___CAST(int,e),
buf);
#endif
if (e == NO_ERROR)
return ___FIX(___UNKNOWN_ERR);
if (e == WSAEWOULDBLOCK)
return ___ERR_CODE_EAGAIN;
return ___FIX(___WIN32_ERR(e));
}
#endif
#ifdef USE_OSErr
___HIDDEN char *OSErr_to_string
___P((int code),
(code)
int code;)
{
return error_number_to_string (code);
}
#ifdef ___DEBUG
___SCMOBJ ___err_code_from_OSErr_debug
___P((OSErr e,
char *file,
int lineno),
(e,
lineno,
file)
OSErr e;
int lineno;
char *file;)
#else
___SCMOBJ ___err_code_from_OSErr
___P((OSErr e),
(e)
OSErr e;)
#endif
{
#ifdef ___DEBUG
___printf ("*** OS ERROR AT \"%s\"@%d.1 -- OSErr=%d (%s)\n",
file,
lineno,
e,
OSErr_to_string (e));
#endif
if (e == noErr)
return ___FIX(___UNKNOWN_ERR);
return ___FIX(___OSERR_ERR(e));
}
#endif
/* Conversion of Scheme error codes to error messages. */
___HIDDEN char *c_type_name_table[] =
{
"int8",
"unsigned-int8",
"int16",
"unsigned-int16",
"int32",
"unsigned-int32",
"int64",
"unsigned-int64",
"float32",
"float64",
"char",
"signed-char",
"unsigned-char",
"ISO-8859-1",
"UCS-2",