Add special event pipes, rework ps2kb process

kernel/proc/proc.c

@@ -101,6 +101,7 @@ Proc *proc_spawnkern(void (*ent)(void), char *name) {
   proc->platformdata.cr3 = hal_vmm_current_cr3();
   proc->state = PROC_READY;
   proc->pid = pids++;
+  spinlock_init(&proc->eventpipes_spinlock);
 
   return proc;
 }
@@ -166,6 +167,7 @@ Proc *proc_spawnuser(char *mountpoint, char *path) {
   proc->platformdata.trapframe.rip = aux.entry;
   proc->state = PROC_READY;
   proc->pid = pids++;
+  spinlock_init(&proc->eventpipes_spinlock);
 
   return proc;
 }

kernel/proc/proc.h

@@ -47,6 +47,8 @@ typedef struct Proc {
   uint64_t vobjcnt;
 
   IpcPipe *pipes[PROC_PIPEHANDLES_MAX];
+  IpcPipe *eventpipes;
+  SpinLock eventpipes_spinlock;
 } Proc;
 
 typedef struct {

kernel/proc/ps2kbproc/ps2kbproc.c

@@ -2,18 +2,45 @@
 #include "proc/proc.h"
 #include "dlmalloc/malloc.h"
 #include "ipc/pipe/pipe.h"
+#include "kprintf.h"
+#include "rbuf/rbuf.h"
+#include "ps2kbproc.h"
+
+Proc *PS2KBPROC = NULL;
+Ps2KbFastBuf PS2KB_BUF;
 
-Proc *PS2KBPROC;
 
 void ps2kbproc_init(Proc *proc) {
   PS2KBPROC = proc;
-  PS2KBPROC->pipes[0] = dlmalloc(sizeof(IpcPipe));
-  ipc_pipeinit(PS2KBPROC->pipes[0]);
+
+  PS2KBPROC->eventpipes = NULL;
+
+  PS2KB_BUF.rbuf.buffer = dlmalloc(IPC_PIPE_MAX);
+  PS2KB_BUF.rbuf.cap = IPC_PIPE_MAX;
+  spinlock_init(&PS2KB_BUF.spinlock);
 }
 
 void ps2kbproc_fn(void) {
   for (;;) {
-  
+    int32_t kbchr;
+    uint8_t *buf = (uint8_t *)&kbchr;
+    size_t i = 0;
+    spinlock_acquire(&PS2KB_BUF.spinlock);
+    for (; i < sizeof(kbchr); i++) {
+      if (rbuf_pop(&PS2KB_BUF.rbuf, &buf[i]) < 0) {
+        break;
+      }
+    }
+    spinlock_release(&PS2KB_BUF.spinlock);
+    if (i > 0) {
+      spinlock_acquire(&PS2KBPROC->eventpipes_spinlock);
+      IpcPipe *head = PS2KBPROC->eventpipes;
+      while (head != NULL) {
+        ipc_pipewrite(head, (uint8_t *)&kbchr, sizeof(kbchr));
+        head = head->next;
+      }
+      spinlock_release(&PS2KBPROC->eventpipes_spinlock);
+    }
   }
 }
 

kernel/proc/ps2kbproc/ps2kbproc.h

@@ -2,8 +2,16 @@
 #define PROC_PS2KB_PS2KBPROC_H_
 
 #include "proc/proc.h"
+#include "rbuf/rbuf.h"
+#include "spinlock/spinlock.h"
+
+typedef struct {
+  RBuf rbuf;
+  SpinLock spinlock;
+} Ps2KbFastBuf;
 
 extern Proc *PS2KBPROC;
+extern Ps2KbFastBuf PS2KB_BUF;
 
 void ps2kbproc_fn(void);
 void ps2kbproc_init(Proc *proc);