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Kernel: Introduce threads, and refactor everything in support of it.

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The scheduler now operates on threads, rather than on processes.
Each process has a main thread, and can have any number of additional
threads. The process exits when the main thread exits.

This patch doesn't actually spawn any additional threads, it merely
does all the plumbing needed to make it possible. :^)
This commit is contained in:
Andreas Kling
2019-03-23 22:03:17 +01:00
parent b0de6aa8d8
commit 60d25f0f4a
32 changed files with 1356 additions and 1098 deletions
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15
Kernel/init.cpp
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@@ -26,9 +26,9 @@
#include "E1000NetworkAdapter.h"
#include <Kernel/NetworkTask.h>
#define SPAWN_LAUNCHER
//#define SPAWN_LAUNCHER
//#define SPAWN_GUITEST2
//#define SPAWN_FILE_MANAGER
#define SPAWN_FILE_MANAGER
//#define SPAWN_PROCESS_MANAGER
//#define SPAWN_TEXT_EDITOR
//#define SPAWN_FONTEDITOR
@@ -78,7 +78,9 @@ VFS* vfs;
vfs->mount_root(e2fs.copy_ref());
dbgprintf("Load ksyms\n");
load_ksyms();
dbgprintf("Loaded ksyms\n");
vfs->mount(ProcFS::the(), "/proc");
vfs->mount(DevPtsFS::the(), "/dev/pts");
@@ -130,7 +132,7 @@ VFS* vfs;
Process::create_kernel_process("spawn_stress", spawn_stress);
#endif
current->sys$exit(0);
current->process().sys$exit(0);
ASSERT_NOT_REACHED();
}
@@ -177,6 +179,7 @@ VFS* vfs;
devptsfs->initialize();
Process::initialize();
Thread::initialize();
Process::create_kernel_process("init_stage2", init_stage2);
Process::create_kernel_process("syncd", [] {
for (;;) {
@@ -186,10 +189,10 @@ VFS* vfs;
});
Process::create_kernel_process("Finalizer", [] {
g_finalizer = current;
current->set_priority(Process::LowPriority);
current->process().set_priority(Process::LowPriority);
for (;;) {
Process::finalize_dying_processes();
current->block(Process::BlockedLurking);
Thread::finalize_dying_threads();
current->block(Thread::BlockedLurking);
Scheduler::yield();
}
});