init.c
// This file is a part of Julia. License is MIT: https://julialang.org/license
/*
init.c
system initialization and global state
*/
#include "platform.h"
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <fcntl.h>
#include <errno.h>
#if !defined(_OS_WINDOWS_) || defined(_COMPILER_GCC_)
#include <getopt.h>
#endif
#if defined(_OS_FREEBSD_)
#include <pthread_np.h>
#endif
#include "julia.h"
#include "julia_internal.h"
#define DEFINE_BUILTIN_GLOBALS
#include "builtin_proto.h"
#undef DEFINE_BUILTIN_GLOBALS
#include "threading.h"
#include "julia_assert.h"
#include "processor.h"
#ifdef __cplusplus
extern "C" {
#endif
#include <libgen.h>
#ifdef _OS_WINDOWS_
extern int needsSymRefreshModuleList;
extern BOOL (WINAPI *hSymRefreshModuleList)(HANDLE);
#else
#include <sys/resource.h>
#include <unistd.h>
#endif
// list of modules being deserialized with __init__ methods
jl_array_t *jl_module_init_order;
JL_DLLEXPORT size_t jl_page_size;
void jl_init_stack_limits(int ismaster, void **stack_lo, void **stack_hi)
{
#ifdef _OS_WINDOWS_
(void)ismaster;
// https://en.wikipedia.org/wiki/Win32_Thread_Information_Block
# ifdef _P64
*stack_hi = (void**)__readgsqword(0x08); // Stack Base / Bottom of stack (high address)
*stack_lo = (void**)__readgsqword(0x10); // Stack Limit / Ceiling of stack (low address)
# else // !_P64
*stack_hi = (void**)__readfsdword(0x04); // Stack Base / Bottom of stack (high address)
*stack_lo = (void**)__readfsdword(0x08); // Stack Limit / Ceiling of stack (low address)
# endif // _P64
#else // !_OS_WINDOWS_
// Only use pthread_*_np functions to get stack address for non-master
// threads since it seems to return bogus values for master thread on Linux
// and possibly OSX.
if (!ismaster) {
# if defined(_OS_LINUX_)
pthread_attr_t attr;
pthread_getattr_np(pthread_self(), &attr);
void *stackaddr;
size_t stacksize;
pthread_attr_getstack(&attr, &stackaddr, &stacksize);
pthread_attr_destroy(&attr);
*stack_lo = (void*)stackaddr;
*stack_hi = (void*)&stacksize;
return;
# elif defined(_OS_DARWIN_)
extern void *pthread_get_stackaddr_np(pthread_t thread);
extern size_t pthread_get_stacksize_np(pthread_t thread);
pthread_t thread = pthread_self();
void *stackaddr = pthread_get_stackaddr_np(thread);
size_t stacksize = pthread_get_stacksize_np(thread);
*stack_lo = (void*)stackaddr;
*stack_hi = (void*)&stacksize;
return;
# elif defined(_OS_FREEBSD_)
pthread_attr_t attr;
pthread_attr_init(&attr);
pthread_attr_get_np(pthread_self(), &attr);
void *stackaddr;
size_t stacksize;
pthread_attr_getstack(&attr, &stackaddr, &stacksize);
pthread_attr_destroy(&attr);
*stack_lo = (void*)stackaddr;
*stack_hi = (void*)&stacksize;
return;
# else
# warning "Getting precise stack size for thread is not supported."
# endif
}
struct rlimit rl;
getrlimit(RLIMIT_STACK, &rl);
size_t stacksize = rl.rlim_cur;
*stack_hi = (void*)&stacksize;
*stack_lo = (void*)((char*)*stack_hi - stacksize);
#endif
}
static void jl_prep_sanitizers(void)
{
#if !defined(_OS_WINDOWS_)
#if defined(_COMPILER_ASAN_ENABLED_) || defined(_COMPILER_MSAN_ENABLED_)
struct rlimit rl;
// When using the sanitizers, increase stack size because they bloat
// stack usage
const rlim_t kStackSize = 64 * 1024 * 1024; // 64MiB stack
int result;
result = getrlimit(RLIMIT_STACK, &rl);
if (result == 0) {
if (rl.rlim_cur < kStackSize) {
rl.rlim_cur = kStackSize;
result = setrlimit(RLIMIT_STACK, &rl);
if (result != 0) {
fprintf(stderr, "setrlimit returned result = %d\n", result);
}
}
}
#endif
#endif
}
struct uv_shutdown_queue_item { uv_handle_t *h; struct uv_shutdown_queue_item *next; };
struct uv_shutdown_queue { struct uv_shutdown_queue_item *first; struct uv_shutdown_queue_item *last; };
static void jl_uv_exitcleanup_add(uv_handle_t *handle, struct uv_shutdown_queue *queue)
{
struct uv_shutdown_queue_item *item = (struct uv_shutdown_queue_item*)malloc_s(sizeof(struct uv_shutdown_queue_item));
item->h = handle;
item->next = NULL;
if (queue->last)
queue->last->next = item;
if (!queue->first)
queue->first = item;
queue->last = item;
}
static void jl_uv_exitcleanup_walk(uv_handle_t *handle, void *arg)
{
jl_uv_exitcleanup_add(handle, (struct uv_shutdown_queue*)arg);
}
static struct uv_shutdown_queue_item *next_shutdown_queue_item(struct uv_shutdown_queue_item *item)
{
struct uv_shutdown_queue_item *rv = item->next;
free(item);
return rv;
}
static void jl_close_item_atexit(uv_handle_t *handle)
{
if (handle->type != UV_FILE && uv_is_closing(handle))
return;
switch(handle->type) {
case UV_PROCESS:
// cause Julia to forget about the Process object
handle->data = NULL;
// and make libuv think it is already dead
((uv_process_t*)handle)->pid = 0;
// fall-through
case UV_TTY:
case UV_UDP:
case UV_TCP:
case UV_NAMED_PIPE:
case UV_POLL:
case UV_TIMER:
case UV_ASYNC:
case UV_FS_EVENT:
case UV_FS_POLL:
case UV_IDLE:
case UV_PREPARE:
case UV_CHECK:
case UV_SIGNAL:
case UV_FILE:
// These will be shutdown as appropriate by jl_close_uv
jl_close_uv(handle);
break;
case UV_HANDLE:
case UV_STREAM:
default:
assert(0 && "not a valid libuv handle");
}
}
JL_DLLEXPORT void jl_atexit_hook(int exitcode)
{
if (jl_all_tls_states == NULL)
return;
jl_task_t *ct = jl_current_task;
if (exitcode == 0)
jl_write_compiler_output();
jl_print_gc_stats(JL_STDERR);
if (jl_options.code_coverage)
jl_write_coverage_data(jl_options.output_code_coverage);
if (jl_options.malloc_log)
jl_write_malloc_log();
if (jl_base_module) {
jl_value_t *f = jl_get_global(jl_base_module, jl_symbol("_atexit"));
if (f != NULL) {
JL_TRY {
size_t last_age = ct->world_age;
ct->world_age = jl_get_world_counter();
jl_apply(&f, 1);
ct->world_age = last_age;
}
JL_CATCH {
jl_printf((JL_STREAM*)STDERR_FILENO, "\natexit hook threw an error: ");
jl_static_show((JL_STREAM*)STDERR_FILENO, jl_current_exception());
jl_printf((JL_STREAM*)STDERR_FILENO, "\n");
jlbacktrace(); // written to STDERR_FILENO
}
}
}
// replace standard output streams with something that we can still print to
// after the finalizers from base/stream.jl close the TTY
JL_STDOUT = (uv_stream_t*) STDOUT_FILENO;
JL_STDERR = (uv_stream_t*) STDERR_FILENO;
jl_gc_run_all_finalizers(ct);
uv_loop_t *loop = jl_global_event_loop();
if (loop == NULL) {
return;
}
struct uv_shutdown_queue queue = {NULL, NULL};
JL_UV_LOCK();
uv_walk(loop, jl_uv_exitcleanup_walk, &queue);
struct uv_shutdown_queue_item *item = queue.first;
if (ct != NULL) {
while (item) {
JL_TRY {
while (item) {
jl_close_item_atexit(item->h);
item = next_shutdown_queue_item(item);
}
}
JL_CATCH {
//error handling -- continue cleanup, as much as possible
assert(item);
uv_unref(item->h);
jl_printf((JL_STREAM*)STDERR_FILENO, "error during exit cleanup: close: ");
jl_static_show((JL_STREAM*)STDERR_FILENO, jl_current_exception());
jl_printf((JL_STREAM*)STDERR_FILENO, "\n");
jlbacktrace(); // written to STDERR_FILENO
item = next_shutdown_queue_item(item);
}
}
}
else {
while (item) {
jl_close_item_atexit(item->h);
item = next_shutdown_queue_item(item);
}
}
// force libuv to spin until everything has finished closing
loop->stop_flag = 0;
while (uv_run(loop, UV_RUN_DEFAULT)) { }
JL_UV_UNLOCK();
// TODO: Destroy threads
jl_destroy_timing();
#ifdef ENABLE_TIMINGS
jl_print_timings();
#endif
jl_teardown_codegen();
}
static void post_boot_hooks(void);
JL_DLLEXPORT void *jl_libjulia_internal_handle;
JL_DLLEXPORT void *jl_libjulia_handle;
JL_DLLEXPORT void *jl_RTLD_DEFAULT_handle;
JL_DLLEXPORT void *jl_exe_handle;
#ifdef _OS_WINDOWS_
void *jl_ntdll_handle;
void *jl_kernel32_handle;
void *jl_crtdll_handle;
void *jl_winsock_handle;
extern const char *jl_crtdll_name;
#endif
uv_loop_t *jl_io_loop;
#ifdef _OS_WINDOWS_
static int uv_dup(uv_os_fd_t fd, uv_os_fd_t* dupfd) {
HANDLE current_process;
if (fd == UV_STDIN_FD || fd == UV_STDOUT_FD || fd == UV_STDERR_FD)
fd = GetStdHandle((DWORD)(uintptr_t) fd);
/* _get_osfhandle will sometimes return -2 in case of an error. This seems */
/* to happen when fd <= 2 and the process' corresponding stdio handle is */
/* set to NULL. Unfortunately DuplicateHandle will happily duplicate */
/* (HANDLE) -2, so this situation goes unnoticed until someone tries to */
/* use the duplicate. Therefore we filter out known-invalid handles here. */
if (fd == INVALID_HANDLE_VALUE ||
fd == NULL ||
fd == (HANDLE) -2) {
*dupfd = INVALID_HANDLE_VALUE;
return 0; // allow the execution to continue even if stdio is not available as in batchmode or without a console
}
current_process = GetCurrentProcess();
if (!DuplicateHandle(current_process,
fd,
current_process,
dupfd,
0,
TRUE,
DUPLICATE_SAME_ACCESS)) {
*dupfd = INVALID_HANDLE_VALUE;
return GetLastError();
}
return 0;
}
#else
static int uv_dup(uv_os_fd_t fd, uv_os_fd_t* dupfd) {
if ((*dupfd = fcntl(fd, F_DUPFD_CLOEXEC, 3)) == -1)
return -errno;
return 0;
}
#endif
static void *init_stdio_handle(const char *stdio, uv_os_fd_t fd, int readable)
{
void *handle;
int err;
// Duplicate the file descriptor so we can later dup it over if we want to redirect
// STDIO without having to worry about closing the associated libuv object.
// This also helps limit the impact other libraries can cause on our file handle.
if ((err = uv_dup(fd, &fd)))
jl_errorf("error initializing %s in uv_dup: %s (%s %d)", stdio, uv_strerror(err), uv_err_name(err), err);
switch(uv_guess_handle(fd)) {
case UV_TTY:
handle = malloc_s(sizeof(uv_tty_t));
if ((err = uv_tty_init(jl_io_loop, (uv_tty_t*)handle, fd, 0))) {
jl_errorf("error initializing %s in uv_tty_init: %s (%s %d)", stdio, uv_strerror(err), uv_err_name(err), err);
}
((uv_tty_t*)handle)->data = NULL;
uv_tty_set_mode((uv_tty_t*)handle, UV_TTY_MODE_NORMAL); // initialized cooked stdio
break;
default:
assert(0 && "missing case for uv_guess_handle return handling");
JL_FALLTHROUGH;
case UV_UDP:
JL_FALLTHROUGH;
case UV_UNKNOWN_HANDLE:
// dup the descriptor with a new one pointing at the bit bucket ...
#if defined(_OS_WINDOWS_)
CloseHandle(fd);
fd = CreateFile("NUL", readable ? FILE_GENERIC_READ : FILE_GENERIC_WRITE | FILE_READ_ATTRIBUTES,
FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
#else
{
int nullfd;
nullfd = open("/dev/null", O_RDWR, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH /* 0666 */);
assert(nullfd != -1);
dup2(nullfd, fd);
close(nullfd);
}
#endif
// ...and continue on as in the UV_FILE case
JL_FALLTHROUGH;
case UV_FILE:
handle = malloc_s(sizeof(jl_uv_file_t));
{
jl_uv_file_t *file = (jl_uv_file_t*)handle;
file->loop = jl_io_loop;
file->type = UV_FILE;
file->file = fd;
file->data = NULL;
}
break;
case UV_NAMED_PIPE:
handle = malloc_s(sizeof(uv_pipe_t));
if ((err = uv_pipe_init(jl_io_loop, (uv_pipe_t*)handle, 0))) {
jl_errorf("error initializing %s in uv_pipe_init: %s (%s %d)", stdio, uv_strerror(err), uv_err_name(err), err);
}
if ((err = uv_pipe_open((uv_pipe_t*)handle, fd))) {
jl_errorf("error initializing %s in uv_pipe_open: %s (%s %d)", stdio, uv_strerror(err), uv_err_name(err), err);
}
((uv_pipe_t*)handle)->data = NULL;
break;
case UV_TCP:
handle = malloc_s(sizeof(uv_tcp_t));
if ((err = uv_tcp_init(jl_io_loop, (uv_tcp_t*)handle))) {
jl_errorf("error initializing %s in uv_tcp_init: %s (%s %d)", stdio, uv_strerror(err), uv_err_name(err), err);
}
if ((err = uv_tcp_open((uv_tcp_t*)handle, (uv_os_sock_t)fd))) {
jl_errorf("error initializing %s in uv_tcp_open: %s (%s %d)", stdio, uv_strerror(err), uv_err_name(err), err);
}
((uv_tcp_t*)handle)->data = NULL;
break;
}
return handle;
}
static void init_stdio(void)
{
JL_STDIN = (uv_stream_t*)init_stdio_handle("stdin", UV_STDIN_FD, 1);
JL_STDOUT = (uv_stream_t*)init_stdio_handle("stdout", UV_STDOUT_FD, 0);
JL_STDERR = (uv_stream_t*)init_stdio_handle("stderr", UV_STDERR_FD, 0);
jl_flush_cstdio();
}
int jl_isabspath(const char *in) JL_NOTSAFEPOINT
{
#ifdef _OS_WINDOWS_
char c0 = in[0];
if (c0 == '/' || c0 == '\\') {
return 1; // absolute path relative to %CD% (current drive), or UNC
}
else if (c0 && in[1] == ':') {
char c2 = in[2];
return c2 == '/' || c2 == '\\'; // absolute path with drive name
}
#else
if (in[0] == '/') return 1; // absolute path
#endif
return 0; // relative path
}
static char *abspath(const char *in, int nprefix)
{ // compute an absolute realpath location, so that chdir doesn't change the file reference
// ignores (copies directly over) nprefix characters at the start of abspath
#ifndef _OS_WINDOWS_
char *out = realpath(in + nprefix, NULL);
if (out) {
if (nprefix > 0) {
size_t sz = strlen(out) + 1;
char *cpy = (char*)malloc_s(sz + nprefix);
memcpy(cpy, in, nprefix);
memcpy(cpy + nprefix, out, sz);
free(out);
out = cpy;
}
}
else {
size_t sz = strlen(in + nprefix) + 1;
if (in[nprefix] == PATHSEPSTRING[0]) {
out = (char*)malloc_s(sz + nprefix);
memcpy(out, in, sz + nprefix);
}
else {
size_t path_size = PATH_MAX;
char *path = (char*)malloc_s(PATH_MAX);
if (uv_cwd(path, &path_size)) {
jl_error("fatal error: unexpected error while retrieving current working directory");
}
out = (char*)malloc_s(path_size + 1 + sz + nprefix);
memcpy(out, in, nprefix);
memcpy(out + nprefix, path, path_size);
out[nprefix + path_size] = PATHSEPSTRING[0];
memcpy(out + nprefix + path_size + 1, in + nprefix, sz);
free(path);
}
}
#else
DWORD n = GetFullPathName(in + nprefix, 0, NULL, NULL);
if (n <= 0) {
jl_error("fatal error: jl_options.image_file path too long or GetFullPathName failed");
}
char *out = (char*)malloc_s(n + nprefix);
DWORD m = GetFullPathName(in + nprefix, n, out + nprefix, NULL);
if (n != m + 1) {
jl_error("fatal error: jl_options.image_file path too long or GetFullPathName failed");
}
memcpy(out, in, nprefix);
#endif
return out;
}
// create an absolute-path copy of the input path format string
// formed as `joinpath(replace(pwd(), "%" => "%%"), in)`
// unless `in` starts with `%`
static const char *absformat(const char *in)
{
if (in[0] == '%' || jl_isabspath(in))
return in;
// get an escaped copy of cwd
size_t path_size = PATH_MAX;
char path[PATH_MAX];
if (uv_cwd(path, &path_size)) {
jl_error("fatal error: unexpected error while retrieving current working directory");
}
size_t sz = strlen(in) + 1;
size_t i, fmt_size = 0;
for (i = 0; i < path_size; i++)
fmt_size += (path[i] == '%' ? 2 : 1);
char *out = (char*)malloc_s(fmt_size + 1 + sz);
fmt_size = 0;
for (i = 0; i < path_size; i++) { // copy-replace pwd portion
char c = path[i];
out[fmt_size++] = c;
if (c == '%')
out[fmt_size++] = '%';
}
out[fmt_size++] = PATHSEPSTRING[0]; // path sep
memcpy(out + fmt_size, in, sz); // copy over format, including nul
return out;
}
static void jl_resolve_sysimg_location(JL_IMAGE_SEARCH rel)
{ // this function resolves the paths in jl_options to absolute file locations as needed
// and it replaces the pointers to `julia_bindir`, `julia_bin`, `image_file`, and output file paths
// it may fail, print an error, and exit(1) if any of these paths are longer than PATH_MAX
//
// note: if you care about lost memory, you should call the appropriate `free()` function
// on the original pointer for each `char*` you've inserted into `jl_options`, after
// calling `julia_init()`
char *free_path = (char*)malloc_s(PATH_MAX);
size_t path_size = PATH_MAX;
if (uv_exepath(free_path, &path_size)) {
jl_error("fatal error: unexpected error while retrieving exepath");
}
if (path_size >= PATH_MAX) {
jl_error("fatal error: jl_options.julia_bin path too long");
}
jl_options.julia_bin = (char*)malloc_s(path_size + 1);
memcpy((char*)jl_options.julia_bin, free_path, path_size);
((char*)jl_options.julia_bin)[path_size] = '\0';
if (!jl_options.julia_bindir) {
jl_options.julia_bindir = getenv("JULIA_BINDIR");
if (!jl_options.julia_bindir) {
jl_options.julia_bindir = dirname(free_path);
}
}
if (jl_options.julia_bindir)
jl_options.julia_bindir = abspath(jl_options.julia_bindir, 0);
free(free_path);
free_path = NULL;
if (jl_options.image_file) {
if (rel == JL_IMAGE_JULIA_HOME && !jl_isabspath(jl_options.image_file)) {
// build time path, relative to JULIA_BINDIR
free_path = (char*)malloc_s(PATH_MAX);
int n = snprintf(free_path, PATH_MAX, "%s" PATHSEPSTRING "%s",
jl_options.julia_bindir, jl_options.image_file);
if (n >= PATH_MAX || n < 0) {
jl_error("fatal error: jl_options.image_file path too long");
}
jl_options.image_file = free_path;
}
if (jl_options.image_file)
jl_options.image_file = abspath(jl_options.image_file, 0);
if (free_path) {
free(free_path);
free_path = NULL;
}
}
if (jl_options.outputo)
jl_options.outputo = abspath(jl_options.outputo, 0);
if (jl_options.outputji)
jl_options.outputji = abspath(jl_options.outputji, 0);
if (jl_options.outputbc)
jl_options.outputbc = abspath(jl_options.outputbc, 0);
if (jl_options.outputasm)
jl_options.outputasm = abspath(jl_options.outputasm, 0);
if (jl_options.machine_file)
jl_options.machine_file = abspath(jl_options.machine_file, 0);
if (jl_options.output_code_coverage)
jl_options.output_code_coverage = absformat(jl_options.output_code_coverage);
const char **cmdp = jl_options.cmds;
if (cmdp) {
for (; *cmdp; cmdp++) {
const char *cmd = *cmdp;
if (cmd[0] == 'L') {
*cmdp = abspath(cmd, 1);
}
}
}
}
static void jl_set_io_wait(int v)
{
jl_task_t *ct = jl_current_task;
ct->ptls->io_wait = v;
}
extern jl_mutex_t jl_modules_mutex;
static void restore_fp_env(void)
{
if (jl_set_zero_subnormals(0) || jl_set_default_nans(0)) {
jl_error("Failed to configure floating point environment");
}
}
static NOINLINE void _finish_julia_init(JL_IMAGE_SEARCH rel, jl_ptls_t ptls, jl_task_t *ct);
JL_DLLEXPORT int jl_default_debug_info_kind;
JL_DLLEXPORT void julia_init(JL_IMAGE_SEARCH rel)
{
jl_default_debug_info_kind = 0;
jl_init_timing();
// Make sure we finalize the tls callback before starting any threads.
(void)jl_get_pgcstack();
jl_safepoint_init();
libsupport_init();
htable_new(&jl_current_modules, 0);
JL_MUTEX_INIT(&jl_modules_mutex);
jl_precompile_toplevel_module = NULL;
ios_set_io_wait_func = jl_set_io_wait;
jl_io_loop = uv_default_loop(); // this loop will internal events (spawning process etc.),
// best to call this first, since it also initializes libuv
jl_init_uv();
init_stdio();
restore_fp_env();
restore_signals();
jl_init_intrinsic_properties();
jl_page_size = jl_getpagesize();
jl_prep_sanitizers();
void *stack_lo, *stack_hi;
jl_init_stack_limits(1, &stack_lo, &stack_hi);
jl_libjulia_internal_handle = jl_load_dynamic_library(NULL, JL_RTLD_DEFAULT, 1);
#ifdef _OS_WINDOWS_
jl_exe_handle = GetModuleHandleA(NULL);
jl_RTLD_DEFAULT_handle = jl_libjulia_internal_handle;
if (!GetModuleHandleExW(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS | GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
(LPCWSTR)&jl_any_type,
(HMODULE*)&jl_libjulia_handle)) {
jl_error("could not load base module");
}
jl_ntdll_handle = jl_dlopen("ntdll.dll", 0); // bypass julia's pathchecking for system dlls
jl_kernel32_handle = jl_dlopen("kernel32.dll", 0);
jl_crtdll_handle = jl_dlopen(jl_crtdll_name, 0);
jl_winsock_handle = jl_dlopen("ws2_32.dll", 0);
uv_mutex_init(&jl_in_stackwalk);
SymSetOptions(SYMOPT_UNDNAME | SYMOPT_DEFERRED_LOADS | SYMOPT_LOAD_LINES | SYMOPT_IGNORE_CVREC);
if (!SymInitialize(GetCurrentProcess(), "", 1)) {
jl_printf(JL_STDERR, "WARNING: failed to initialize stack walk info\n");
}
needsSymRefreshModuleList = 0;
HMODULE jl_dbghelp = (HMODULE) jl_dlopen("dbghelp.dll", 0);
if (jl_dbghelp)
jl_dlsym(jl_dbghelp, "SymRefreshModuleList", (void **)&hSymRefreshModuleList, 1);
#else
jl_exe_handle = jl_dlopen(NULL, JL_RTLD_NOW);
#ifdef RTLD_DEFAULT
jl_RTLD_DEFAULT_handle = RTLD_DEFAULT;
#else
jl_RTLD_DEFAULT_handle = jl_exe_handle;
#endif
#endif
if ((jl_options.outputo || jl_options.outputbc || jl_options.outputasm) &&
(jl_options.code_coverage || jl_options.malloc_log)) {
jl_error("cannot generate code-coverage or track allocation information while generating a .o, .bc, or .s output file");
}
jl_init_runtime_ccall();
jl_gc_init();
jl_init_tasks();
jl_init_threading();
jl_ptls_t ptls = jl_init_threadtls(0);
// warning: this changes `jl_current_task`, so be careful not to call that from this function
jl_task_t *ct = jl_init_root_task(ptls, stack_lo, stack_hi);
JL_GC_PROMISE_ROOTED(ct);
_finish_julia_init(rel, ptls, ct);
}
static NOINLINE void _finish_julia_init(JL_IMAGE_SEARCH rel, jl_ptls_t ptls, jl_task_t *ct)
{
jl_init_threadinginfra();
jl_resolve_sysimg_location(rel);
// loads sysimg if available, and conditionally sets jl_options.cpu_target
if (jl_options.image_file)
jl_preload_sysimg_so(jl_options.image_file);
if (jl_options.cpu_target == NULL)
jl_options.cpu_target = "native";
if (jl_options.image_file) {
jl_restore_system_image(jl_options.image_file);
} else {
jl_init_types();
jl_init_codegen();
}
jl_init_common_symbols();
jl_init_flisp();
jl_init_serializer();
if (!jl_options.image_file) {
jl_core_module = jl_new_module(jl_symbol("Core"));
jl_core_module->parent = jl_core_module;
jl_type_typename->mt->module = jl_core_module;
jl_top_module = jl_core_module;
jl_init_intrinsic_functions();
jl_init_primitives();
jl_init_main_module();
jl_load(jl_core_module, "boot.jl");
post_boot_hooks();
}
if (jl_base_module != NULL) {
// Do initialization needed before starting child threads
jl_value_t *f = jl_get_global(jl_base_module, jl_symbol("__preinit_threads__"));
if (f) {
size_t last_age = ct->world_age;
ct->world_age = jl_get_world_counter();
jl_apply(&f, 1);
ct->world_age = last_age;
}
}
else {
// nthreads > 1 requires code in Base
jl_n_threads = 1;
}
jl_start_threads();
// This needs to be after jl_start_threads
if (jl_options.handle_signals == JL_OPTIONS_HANDLE_SIGNALS_ON)
jl_install_default_signal_handlers();
jl_gc_enable(1);
if (jl_options.image_file && (!jl_generating_output() || jl_options.incremental) && jl_module_init_order) {
jl_array_t *init_order = jl_module_init_order;
JL_GC_PUSH1(&init_order);
jl_module_init_order = NULL;
int i, l = jl_array_len(init_order);
for (i = 0; i < l; i++) {
jl_value_t *mod = jl_array_ptr_ref(init_order, i);
jl_module_run_initializer((jl_module_t*)mod);
}
JL_GC_POP();
}
if (jl_options.handle_signals == JL_OPTIONS_HANDLE_SIGNALS_ON)
jl_install_sigint_handler();
}
static jl_value_t *core(const char *name)
{
return jl_get_global(jl_core_module, jl_symbol(name));
}
// fetch references to things defined in boot.jl
static void post_boot_hooks(void)
{
jl_char_type = (jl_datatype_t*)core("Char");
jl_int8_type = (jl_datatype_t*)core("Int8");
jl_int16_type = (jl_datatype_t*)core("Int16");
jl_uint16_type = (jl_datatype_t*)core("UInt16");
jl_float16_type = (jl_datatype_t*)core("Float16");
jl_float32_type = (jl_datatype_t*)core("Float32");
jl_float64_type = (jl_datatype_t*)core("Float64");
jl_floatingpoint_type = (jl_datatype_t*)core("AbstractFloat");
jl_number_type = (jl_datatype_t*)core("Number");
jl_signed_type = (jl_datatype_t*)core("Signed");
jl_datatype_t *jl_unsigned_type = (jl_datatype_t*)core("Unsigned");
jl_datatype_t *jl_integer_type = (jl_datatype_t*)core("Integer");
jl_bool_type->super = jl_integer_type;
jl_uint8_type->super = jl_unsigned_type;
jl_int32_type->super = jl_signed_type;
jl_int64_type->super = jl_signed_type;
jl_uint32_type->super = jl_unsigned_type;
jl_uint64_type->super = jl_unsigned_type;
jl_errorexception_type = (jl_datatype_t*)core("ErrorException");
jl_stackovf_exception = jl_new_struct_uninit((jl_datatype_t*)core("StackOverflowError"));
jl_diverror_exception = jl_new_struct_uninit((jl_datatype_t*)core("DivideError"));
jl_undefref_exception = jl_new_struct_uninit((jl_datatype_t*)core("UndefRefError"));
jl_undefvarerror_type = (jl_datatype_t*)core("UndefVarError");
jl_atomicerror_type = (jl_datatype_t*)core("ConcurrencyViolationError");
jl_interrupt_exception = jl_new_struct_uninit((jl_datatype_t*)core("InterruptException"));
jl_boundserror_type = (jl_datatype_t*)core("BoundsError");
jl_memory_exception = jl_new_struct_uninit((jl_datatype_t*)core("OutOfMemoryError"));
jl_readonlymemory_exception = jl_new_struct_uninit((jl_datatype_t*)core("ReadOnlyMemoryError"));
jl_typeerror_type = (jl_datatype_t*)core("TypeError");
#ifdef SEGV_EXCEPTION
jl_segv_exception = jl_new_struct_uninit((jl_datatype_t*)core("SegmentationFault"));
#endif
jl_argumenterror_type = (jl_datatype_t*)core("ArgumentError");
jl_methoderror_type = (jl_datatype_t*)core("MethodError");
jl_loaderror_type = (jl_datatype_t*)core("LoadError");
jl_initerror_type = (jl_datatype_t*)core("InitError");
jl_pair_type = core("Pair");
jl_weakref_type = (jl_datatype_t*)core("WeakRef");
jl_vecelement_typename = ((jl_datatype_t*)jl_unwrap_unionall(core("VecElement")))->name;
jl_init_box_caches();
// set module field of primitive types
int i;
void **table = jl_core_module->bindings.table;
for (i = 1; i < jl_core_module->bindings.size; i += 2) {
if (table[i] != HT_NOTFOUND) {
jl_binding_t *b = (jl_binding_t*)table[i];
jl_value_t *v = jl_atomic_load_relaxed(&b->value);
if (v) {
if (jl_is_unionall(v))
v = jl_unwrap_unionall(v);
if (jl_is_datatype(v)) {
jl_datatype_t *tt = (jl_datatype_t*)v;
tt->name->module = jl_core_module;
if (tt->name->mt)
tt->name->mt->module = jl_core_module;
}
}
}
}
}
#ifdef __cplusplus
}
#endif