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// This file is a part of Julia. License is MIT: https://julialang.org/license
/*
repl.c
system startup, main(), and console interaction
*/
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <setjmp.h>
#include <signal.h>
#include <time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <limits.h>
#include <errno.h>
#include <math.h>
#include <ctype.h>
#include <inttypes.h>
#include "uv.h"
#include "../src/julia.h"
#include "../src/julia_assert.h"
JULIA_DEFINE_FAST_TLS()
#ifdef __cplusplus
extern "C" {
#endif
static int exec_program(char *program)
{
jl_ptls_t ptls = jl_get_ptls_states();
JL_TRY {
jl_load(jl_main_module, program);
}
JL_CATCH {
jl_value_t *errs = jl_stderr_obj();
jl_value_t *e = ptls->exception_in_transit;
// Manually save and restore the backtrace so that we print the original
// one instead of the one caused by `show`.
// We can't use safe_restore since that will cause any error
// (including the ones that would have been caught) to abort.
uintptr_t *volatile bt_data = NULL;
size_t bt_size = ptls->bt_size;
volatile int shown_err = 0;
jl_printf(JL_STDERR, "error during bootstrap:\n");
JL_TRY {
if (errs) {
bt_data = (uintptr_t*)malloc(bt_size * sizeof(void*));
memcpy(bt_data, ptls->bt_data, bt_size * sizeof(void*));
jl_value_t *showf = jl_get_function(jl_base_module, "show");
if (showf != NULL) {
jl_call2(showf, errs, e);
jl_printf(JL_STDERR, "\n");
shown_err = 1;
}
}
}
JL_CATCH {
}
if (bt_data) {
ptls->bt_size = bt_size;
memcpy(ptls->bt_data, bt_data, bt_size * sizeof(void*));
free(bt_data);
}
if (!shown_err) {
jl_static_show(JL_STDERR, e);
jl_printf(JL_STDERR, "\n");
}
jlbacktrace();
jl_printf(JL_STDERR, "\n");
return 1;
}
return 0;
}
void jl_lisp_prompt();
#ifdef JL_GF_PROFILE
static void print_profile(void)
{
size_t i;
void **table = jl_base_module->bindings.table;
for(i=1; i < jl_base_module->bindings.size; i+=2) {
if (table[i] != HT_NOTFOUND) {
jl_binding_t *b = (jl_binding_t*)table[i];
if (b->value != NULL && jl_is_function(b->value) &&
jl_is_gf(b->value)) {
jl_printf(JL_STDERR, "%d\t%s\n",
jl_gf_mtable(b->value)->ncalls,
jl_gf_name(b->value)->name);
}
}
}
}
#endif
static NOINLINE int true_main(int argc, char *argv[])
{
jl_ptls_t ptls = jl_get_ptls_states();
jl_set_ARGS(argc, argv);
jl_function_t *start_client = jl_base_module ?
(jl_function_t*)jl_get_global(jl_base_module, jl_symbol("_start")) : NULL;
if (start_client) {
JL_TRY {
size_t last_age = jl_get_ptls_states()->world_age;
jl_get_ptls_states()->world_age = jl_get_world_counter();
jl_apply(&start_client, 1);
jl_get_ptls_states()->world_age = last_age;
}
JL_CATCH {
jl_no_exc_handler(jl_exception_in_transit);
}
return 0;
}
// run program if specified, otherwise enter REPL
if (argc > 0) {
if (strcmp(argv[0], "-")) {
return exec_program(argv[0]);
}
}
ios_puts("WARNING: Base._start not defined, falling back to economy mode repl.\n", ios_stdout);
if (!jl_errorexception_type)
ios_puts("WARNING: jl_errorexception_type not defined; any errors will be fatal.\n", ios_stdout);
while (!ios_eof(ios_stdin)) {
char *volatile line = NULL;
JL_TRY {
ios_puts("\njulia> ", ios_stdout);
ios_flush(ios_stdout);
line = ios_readline(ios_stdin);
jl_value_t *val = (jl_value_t*)jl_eval_string(line);
if (jl_exception_occurred()) {
jl_printf(JL_STDERR, "error during run:\n");
jl_static_show(JL_STDERR, ptls->exception_in_transit);
jl_exception_clear();
}
else if (val) {
jl_static_show(JL_STDOUT, val);
}
jl_printf(JL_STDOUT, "\n");
free(line);
line = NULL;
uv_run(jl_global_event_loop(),UV_RUN_NOWAIT);
}
JL_CATCH {
if (line) {
free(line);
line = NULL;
}
jl_printf(JL_STDERR, "\nparser error:\n");
jl_static_show(JL_STDERR, ptls->exception_in_transit);
jl_printf(JL_STDERR, "\n");
jlbacktrace();
}
}
return 0;
}
#ifndef _OS_WINDOWS_
int main(int argc, char *argv[])
{
uv_setup_args(argc, argv); // no-op on Windows
#else
static void lock_low32() {
#if defined(_P64) && defined(JL_DEBUG_BUILD)
// Wine currently has a that causes it to answer VirtualQuery incorrectly.
// block usage of the 32-bit address space on win64, to catch pointer cast errors
char *const max32addr = (char*)0xffffffffL;
SYSTEM_INFO info;
MEMORY_BASIC_INFORMATION meminfo;
GetNativeSystemInfo(&info);
memset(&meminfo, 0, sizeof(meminfo));
meminfo.BaseAddress = info.lpMinimumApplicationAddress;
while ((char*)meminfo.BaseAddress < max32addr) {
size_t nbytes = VirtualQuery(meminfo.BaseAddress, &meminfo, sizeof(meminfo));
assert(nbytes == sizeof(meminfo));
if (meminfo.State == MEM_FREE) { // reserve all free pages in the first 4GB of memory
char *first = (char*)meminfo.BaseAddress;
char *last = first + meminfo.RegionSize;
if (last > max32addr)
last = max32addr;
// adjust first up to the first allocation granularity boundary
// adjust last down to the last allocation granularity boundary
first = (char*)(((long long)first + info.dwAllocationGranularity - 1) & ~(info.dwAllocationGranularity - 1));
last = (char*)((long long)last & ~(info.dwAllocationGranularity - 1));
if (last != first) {
void *p = VirtualAlloc(first, last - first, MEM_RESERVE, PAGE_NOACCESS); // reserve all memory in between
if ((char*)p != first)
// Wine and Windows10 seem to have issues with reporting memory access information correctly
// so we sometimes end up with unexpected results - this is just ignore those and continue
// this is just a debugging aid to help find accidental pointer truncation anyways, so it's not critical
VirtualFree(p, 0, MEM_RELEASE);
}
}
meminfo.BaseAddress += meminfo.RegionSize;
}
#endif
}
int wmain(int argc, wchar_t *argv[], wchar_t *envp[])
{
int i;
lock_low32();
for (i=0; i<argc; i++) { // write the command line to UTF8
wchar_t *warg = argv[i];
size_t len = WideCharToMultiByte(CP_UTF8, 0, warg, -1, NULL, 0, NULL, NULL);
if (!len) return 1;
char *arg = (char*)alloca(len);
if (!WideCharToMultiByte(CP_UTF8, 0, warg, -1, arg, len, NULL, NULL)) return 1;
argv[i] = (wchar_t*)arg;
}
#endif
libsupport_init();
int lisp_prompt = (argc >= 2 && strcmp((char*)argv[1],"--lisp") == 0);
if (lisp_prompt) {
memmove(&argv[1], &argv[2], (argc-2)*sizeof(void*));
argc--;
}
jl_parse_opts(&argc, (char***)&argv);
julia_init(jl_options.image_file_specified ? JL_IMAGE_CWD : JL_IMAGE_JULIA_HOME);
if (lisp_prompt) {
jl_get_ptls_states()->world_age = jl_get_world_counter();
jl_lisp_prompt();
return 0;
}
int ret = true_main(argc, (char**)argv);
jl_atexit_hook(ret);
return ret;
}
#ifdef __cplusplus
}
#endif
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