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https://github.com/RGBCube/serenity
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Kernel+LibPthread: pthread_create handles pthread_attr_t
Add an initial implementation of pthread attributes for: * detach state (joinable, detached) * schedule params (just priority) * guard page size (as skeleton) (requires kernel support maybe?) * stack size and user-provided stack location (4 or 8 MB only, must be aligned) Add some tests too, to the thread test program. Also, LibC: Move pthread declarations to sys/types.h, where they belong.
This commit is contained in:
Andrew Kaster
Andreas Kling
parent
aae26a3a1e
commit
618aebdd8a
9 changed files with 596 additions and 23 deletions
254
Userland/tt.cpp
254
Userland/tt.cpp
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@ -1,14 +1,28 @@
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#include <mman.h>
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#include <pthread.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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static int mutex_test();
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static int detached_test();
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static int priority_test();
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static int stack_size_test();
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static int set_stack_test();
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int main(int argc, char** argv)
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{
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if (argc == 2 && *argv[1] == 'm')
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return mutex_test();
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if (argc == 2 && *argv[1] == 'd')
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return detached_test();
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if (argc == 2 && *argv[1] == 'p')
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return priority_test();
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if (argc == 2 && *argv[1] == 's')
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return stack_size_test();
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if (argc == 2 && *argv[1] == 'x')
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return set_stack_test();
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printf("Hello from the first thread!\n");
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pthread_t thread_id;
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@ -70,3 +84,241 @@ int mutex_test()
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}
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return 0;
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}
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int detached_test()
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{
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pthread_attr_t attributes;
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int rc = pthread_attr_init(&attributes);
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if (rc != 0) {
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printf("pthread_attr_setdetachstate: %s\n", strerror(rc));
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return 1;
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}
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int detach_state = 99; // clearly invalid
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rc = pthread_attr_getdetachstate(&attributes, &detach_state);
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if (rc != 0) {
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printf("pthread_attr_setdetachstate: %s\n", strerror(rc));
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return 2;
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}
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printf("Default detach state: %s\n", detach_state == PTHREAD_CREATE_JOINABLE ? "joinable" : "detached");
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detach_state = PTHREAD_CREATE_DETACHED;
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rc = pthread_attr_setdetachstate(&attributes, detach_state);
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if (rc != 0) {
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printf("pthread_attr_setdetachstate: %s\n", strerror(rc));
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return 3;
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}
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printf("Set detach state on new thread to detached\n");
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pthread_t thread_id;
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rc = pthread_create(
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&thread_id, &attributes, [](void*) -> void* {
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printf("I'm the secondary thread :^)\n");
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sleep(1);
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pthread_exit((void*)0xDEADBEEF);
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return nullptr;
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},
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nullptr);
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if (rc < 0) {
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perror("pthread_create");
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return 4;
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}
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void* ret_val;
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errno = 0;
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rc = pthread_join(thread_id, &ret_val);
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if (rc < 0 && errno != EINVAL) {
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perror("pthread_join");
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return 5;
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}
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if (errno != EINVAL) {
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printf("Expected EINVAL! Thread was joinable?\n");
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return 6;
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}
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sleep(2);
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printf("Thread was created detached. I sure hope it exited on its own.\n");
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rc = pthread_attr_destroy(&attributes);
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if (rc != 0) {
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printf("pthread_attr_setdetachstate: %s\n", strerror(rc));
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return 7;
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}
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return 0;
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}
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int priority_test()
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{
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pthread_attr_t attributes;
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int rc = pthread_attr_init(&attributes);
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if (rc != 0) {
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printf("pthread_attr_init: %s\n", strerror(rc));
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return 1;
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}
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struct sched_param sched_params;
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rc = pthread_attr_getschedparam(&attributes, &sched_params);
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if (rc != 0) {
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printf("pthread_attr_getschedparam: %s\n", strerror(rc));
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return 2;
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}
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printf("Default priority: %d\n", sched_params.sched_priority);
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sched_params.sched_priority = 3;
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rc = pthread_attr_setschedparam(&attributes, &sched_params);
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if (rc != 0) {
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printf("pthread_attr_setschedparam: %s\n", strerror(rc));
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return 3;
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}
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printf("Set thread priority to 3\n");
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pthread_t thread_id;
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rc = pthread_create(
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&thread_id, &attributes, [](void*) -> void* {
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printf("I'm the secondary thread :^)\n");
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sleep(1);
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pthread_exit((void*)0xDEADBEEF);
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return nullptr;
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},
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nullptr);
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if (rc < 0) {
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perror("pthread_create");
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return 4;
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}
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rc = pthread_join(thread_id, nullptr);
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if (rc < 0) {
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perror("pthread_join");
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return 5;
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}
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rc = pthread_attr_destroy(&attributes);
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if (rc != 0) {
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printf("pthread_attr_destroy: %s\n", strerror(rc));
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return 6;
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}
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return 0;
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}
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int stack_size_test()
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{
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pthread_attr_t attributes;
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int rc = pthread_attr_init(&attributes);
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if (rc != 0) {
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printf("pthread_attr_init: %s\n", strerror(rc));
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return 1;
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}
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size_t stack_size;
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rc = pthread_attr_getstacksize(&attributes, &stack_size);
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if (rc != 0) {
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printf("pthread_attr_getstacksize: %s\n", strerror(rc));
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return 2;
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}
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printf("Default stack size: %zu\n", stack_size);
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stack_size = 8 * 1024 * 1024;
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rc = pthread_attr_setstacksize(&attributes, stack_size);
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if (rc != 0) {
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printf("pthread_attr_setstacksize: %s\n", strerror(rc));
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return 3;
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}
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printf("Set thread stack size to 8 MB\n");
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pthread_t thread_id;
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rc = pthread_create(
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&thread_id, &attributes, [](void*) -> void* {
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printf("I'm the secondary thread :^)\n");
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sleep(1);
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pthread_exit((void*)0xDEADBEEF);
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return nullptr;
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},
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nullptr);
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if (rc < 0) {
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perror("pthread_create");
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return 4;
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}
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rc = pthread_join(thread_id, nullptr);
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if (rc < 0) {
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perror("pthread_join");
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return 5;
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}
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rc = pthread_attr_destroy(&attributes);
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if (rc != 0) {
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printf("pthread_attr_destroy: %s\n", strerror(rc));
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return 6;
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}
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return 0;
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}
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int set_stack_test()
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{
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pthread_attr_t attributes;
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int rc = pthread_attr_init(&attributes);
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if (rc < 0) {
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printf("pthread_attr_init: %s\n", strerror(rc));
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return 1;
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}
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size_t stack_size = 8 * 1024 * 1024;
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void* stack_addr = mmap_with_name(nullptr, stack_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_STACK, 0, 0, "Cool stack");
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if (!stack_addr) {
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perror("mmap_with_name");
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return -1;
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}
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rc = pthread_attr_setstack(&attributes, stack_addr, stack_size);
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if (rc != 0) {
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printf("pthread_attr_setstack: %s\n", strerror(rc));
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return 2;
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}
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printf("Set thread stack to %p, size %zu\n", stack_addr, stack_size);
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size_t stack_size_verify;
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void* stack_addr_verify;
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rc = pthread_attr_getstack(&attributes, &stack_addr_verify, &stack_size_verify);
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if (rc != 0) {
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printf("pthread_attr_getstack: %s\n", strerror(rc));
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return 3;
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}
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if (stack_addr != stack_addr_verify || stack_size != stack_size_verify) {
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printf("Stack address and size don't match! addr: %p %p, size: %zu %zu\n", stack_addr, stack_addr_verify, stack_size, stack_size_verify);
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return 4;
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}
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pthread_t thread_id;
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rc = pthread_create(
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&thread_id, &attributes, [](void*) -> void* {
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printf("I'm the secondary thread :^)\n");
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sleep(1);
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pthread_exit((void*)0xDEADBEEF);
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return nullptr;
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},
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nullptr);
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if (rc < 0) {
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perror("pthread_create");
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return 5;
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}
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rc = pthread_join(thread_id, nullptr);
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if (rc < 0) {
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perror("pthread_join");
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return 6;
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}
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rc = pthread_attr_destroy(&attributes);
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if (rc != 0) {
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printf("pthread_attr_destroy: %s\n", strerror(rc));
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return 7;
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}
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return 0;
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}
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