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mirror of https://github.com/janet-lang/janet synced 2024-12-24 23:40:27 +00:00

Add option to build janet without thread library.

This commit is contained in:
Calvin Rose 2021-07-17 15:13:28 -05:00
parent ab27b789e4
commit aea1f59f6e
6 changed files with 35 additions and 8 deletions

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@ -2,6 +2,7 @@
All notable changes to this project will be documented in this file.
## 1.17.0 - Unreleased
- Add build option to disable the threading library without disabling all threads.
- Remove JPM from the main Janet distribution. Instead, JPM must be installed
separately like any other package.
- Fix issue with `ev/go` when called with an initial value and supervisor.

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@ -73,6 +73,7 @@ conf.set('JANET_NO_REALPATH', not get_option('realpath'))
conf.set('JANET_NO_PROCESSES', not get_option('processes'))
conf.set('JANET_SIMPLE_GETLINE', get_option('simple_getline'))
conf.set('JANET_EV_EPOLL', get_option('epoll'))
conf.set('JANET_NO_THREADS', get_option('threads'))
if get_option('os_name') != ''
conf.set('JANET_OS_NAME', get_option('os_name'))
endif

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@ -1,6 +1,7 @@
option('git_hash', type : 'string', value : 'meson')
option('single_threaded', type : 'boolean', value : false)
option('threads', type : 'boolean', value : true)
option('nanbox', type : 'boolean', value : true)
option('dynamic_modules', type : 'boolean', value : true)
option('docstrings', type : 'boolean', value : true)

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@ -32,6 +32,7 @@
/* #define JANET_NO_REALPATH */
/* #define JANET_NO_SYMLINKS */
/* #define JANET_NO_UMASK */
/* #define JANET_NO_THREADS */
/* Other settings */
/* #define JANET_DEBUG */

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@ -55,8 +55,6 @@
#endif
#endif
/* Ring buffer for storing a list of fibers */
typedef struct {
JanetFiber *fiber;
uint32_t sched_id;
@ -688,7 +686,7 @@ static int janet_channel_push(JanetChannel *channel, Janet x, int mode) {
return 0;
}
/* Pop from a channel - returns 1 if item was obtain, 0 otherwise. The item
/* Pop from a channel - returns 1 if item was obtained, 0 otherwise. The item
* is returned by reference. If the pop would block, will add to the read_pending
* queue in the channel. */
static int janet_channel_pop(JanetChannel *channel, Janet *item, int is_choice) {
@ -1386,6 +1384,9 @@ void janet_ev_threaded_call(JanetThreadedSubroutine fp, JanetEVGenericMessage ar
/* Default callback for janet_ev_threaded_await. */
void janet_ev_default_threaded_callback(JanetEVGenericMessage return_value) {
if (return_value.fiber == NULL) {
return;
}
switch (return_value.tag) {
default:
case JANET_EV_TCTAG_NIL:
@ -2052,7 +2053,11 @@ static JanetEVGenericMessage janet_go_thread_subr(JanetEVGenericMessage args) {
static Janet cfun_ev_thread(int32_t argc, Janet *argv) {
janet_arity(argc, 1, 3);
janet_getfiber(argv, 0);
Janet value = argc == 2 ? argv[1] : janet_wrap_nil();
Janet value = argc >= 2 ? argv[1] : janet_wrap_nil();
uint64_t flags = 0;
if (argc >= 3) {
flags = janet_getflags(argv, 2, "n");
}
/* Marshal arguments for the new thread. */
JanetBuffer *buffer = janet_malloc(sizeof(JanetBuffer));
if (NULL == buffer) {
@ -2063,7 +2068,18 @@ static Janet cfun_ev_thread(int32_t argc, Janet *argv) {
janet_marshal(buffer, janet_wrap_table(janet_vm.registry), NULL, JANET_MARSHAL_UNSAFE);
janet_marshal(buffer, argv[0], NULL, JANET_MARSHAL_UNSAFE);
janet_marshal(buffer, value, NULL, JANET_MARSHAL_UNSAFE);
janet_ev_threaded_await(janet_go_thread_subr, 0, argc, buffer);
if (flags & 0x1) {
/* Return immediately */
JanetEVGenericMessage arguments;
arguments.tag = 0;
arguments.argi = argc;
arguments.argp = buffer;
arguments.fiber = NULL;
janet_ev_threaded_call(janet_go_thread_subr, arguments, janet_ev_default_threaded_callback);
return janet_wrap_nil();
} else {
janet_ev_threaded_await(janet_go_thread_subr, 0, argc, buffer);
}
}
static Janet cfun_ev_give_supervisor(int32_t argc, Janet *argv) {
@ -2185,7 +2201,8 @@ static const JanetReg ev_cfuns[] = {
"Resume a (copy of a) `fiber` in a new operating system thread, optionally passing `value` "
"to resume with. "
"Unlike `ev/go`, this function will suspend the current fiber until the thread is complete. "
"The the final result.")
"If you want to run the thread without waiting for a result, pass the `:n` flag to return nil immediately. "
"Otherwise, returns (a copy of) the final result from the fiber on the new thread.")
},
{
"ev/give-supervisor", cfun_ev_give_supervisor,

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@ -144,17 +144,23 @@ extern "C" {
#define JANET_NO_UTC_MKTIME
#endif
/* Check thread library */
#ifndef JANET_NO_THREADS
#define JANET_THREADS
#endif
/* Define how global janet state is declared */
/* Also enable the thread library only if not single-threaded */
#ifdef JANET_SINGLE_THREADED
#define JANET_THREAD_LOCAL
#undef JANET_THREADS
#elif defined(__GNUC__)
#define JANET_THREAD_LOCAL __thread
#define JANET_THREADS
#elif defined(_MSC_BUILD)
#define JANET_THREAD_LOCAL __declspec(thread)
#define JANET_THREADS
#else
#define JANET_THREAD_LOCAL
#undef JANET_THREADS
#endif
/* Enable or disable dynamic module loading. Enabled by default. */