Implement streams IPC mechanism

ce/Makefile

@@ -9,7 +9,7 @@ $(eval $(call add_lib,libterminal))
 $(eval $(call add_lib,libfat))
 $(eval $(call add_lib,libmalloc))
 $(eval $(call add_lib,libdebugconsole))
-$(eval $(call add_lib,libkb))
+$(eval $(call add_include,libkb))
 
 cflags += -DPRINTF_INCLUDE_CONFIG_H=1
 

ce/ce.c

@@ -14,6 +14,7 @@
 #include <stdbool.h>
 #include <stddef.h>
 #include <stdint.h>
+#include <streams.h>
 #include <string.h>
 #include <system.h>
 #include <tcursor.h>
@@ -77,10 +78,12 @@ void app_main (void) {
     mprintf (PROMPT);
 
     for (;;) {
-      int ch = kb_read_key ();
+      uint8_t ch;
 
-      if (ch == 0)
+      if (stream_read (process_get_pgid (), STREAM_IN, &ch, 1) <= 0) {
+        sched ();
         continue;
+      }
 
       if (ch == '\n')
         break;

ce/edit.c

@@ -14,6 +14,7 @@
 #include <stdbool.h>
 #include <stddef.h>
 #include <stdint.h>
+#include <streams.h>
 #include <string.h>
 #include <system.h>
 #include <tcursor.h>
@@ -231,10 +232,15 @@ void edit_start (const char* volume, const char* file_path, const char* text, si
         (int)(editor.cursor.line - editor.row_offset) + 1,
         (int)(editor.cursor.col - editor.col_offset) + 1 + (int)gutter_width);
 
-    mail_send (process_get_exec_pgid (), backbuffer, bbptr - backbuffer);
+    stream_write (process_get_pgid (), STREAM_OUT, backbuffer, bbptr - backbuffer);
 
     uint8_t ch = 0;
-    mail_receive (&ch, 1);
+    for (;;) {
+      if (stream_read (process_get_pgid (), STREAM_IN, &ch, 1) > 0)
+        break;
+      else
+        sched ();
+    }
 
     switch (ch) {
     case '\b':

ce/interp.c

@@ -18,6 +18,7 @@
 #include <process_self.h>
 #include <stddef.h>
 #include <str_status.h>
+#include <streams.h>
 #include <string.h>
 #include <system.h>
 #include <tcursor.h>
@@ -160,7 +161,7 @@ static void cat (struct context* context, char** file_paths, size_t files_count)
         return;
       }
 
-      mail_send (process_get_exec_pgid (), buffer, chunk_size);
+      stream_write (process_get_pgid (), STREAM_OUT, buffer, chunk_size);
     }
 
     if (rem > 0) {
@@ -170,7 +171,7 @@ static void cat (struct context* context, char** file_paths, size_t files_count)
         return;
       }
 
-      mail_send (process_get_exec_pgid (), buffer, rem);
+      stream_write (process_get_pgid (), STREAM_OUT, buffer, rem);
     }
 
     filereader_fini (&fr);
@@ -339,37 +340,37 @@ static void help (struct context* context) {
   cprintf (context, "quit\n");
 }
 
-static void cmd_cancel_proc (void* arg) {
-  int pid = (int)(uintptr_t)arg;
+/* static void cmd_cancel_proc (void* arg) { */
+/*   int pid = (int)(uintptr_t)arg; */
 
-  int ch = 0;
+/*   int ch = 0; */
 
-  for (;;) {
-    ch = kb_read_key_nonblock ();
+/*   for (;;) { */
+/*     ch = kb_read_key_nonblock (); */
 
-    if (ch == KB_CTRL ('C'))
-      break;
-    else
-      sched ();
-  }
+/*     if (ch == KB_CTRL ('C')) */
+/*       break; */
+/*     else */
+/*       sched (); */
+/*   } */
 
-  kill (pid);
-}
+/*   kill (pid); */
+/* } */
 
-static void cmd_collect_proc (void* arg) {
-#define RECV_MAX (1024 * 16)
+/* static void cmd_collect_proc (void* arg) { */
+/* #define RECV_MAX (1024 * 16) */
 
-  (void)arg;
+/*   (void)arg; */
 
-  char recv[RECV_MAX];
-  for (;;) {
-    memset (recv, 0, sizeof (recv));
-    if (mail_receive_nonblock (&recv, sizeof (recv) - 1) == ST_OK)
-      mail_send (process_get_exec_pgid (), recv, strlen (recv));
-    else
-      sched ();
-  }
-}
+/*   char recv[RECV_MAX]; */
+/*   for (;;) { */
+/*     memset (recv, 0, sizeof (recv)); */
+/*     if (mail_receive_nonblock (&recv, sizeof (recv) - 1) == ST_OK) */
+/*       mail_send (process_get_exec_pgid (), recv, strlen (recv)); */
+/*     else */
+/*       sched (); */
+/*   } */
+/* } */
 
 static void execute_cmd (struct ast_cmd* cmd, struct context* context) {
   if (strcmp (cmd->name, "echo") == 0) {
@@ -442,16 +443,16 @@ static void execute_cmd (struct ast_cmd* cmd, struct context* context) {
       }
     }
 
-    struct process_data* collect_pdata = process_spawn (&cmd_collect_proc, NULL);
-    struct process_data* cancel_pdata = process_spawn (&cmd_cancel_proc, (void*)pid);
+    /* struct process_data* collect_pdata = process_spawn (&cmd_collect_proc, NULL); */
+    /* struct process_data* cancel_pdata = process_spawn (&cmd_cancel_proc, (void*)pid); */
 
     exec_partial_fini (pid);
     wait_for_pid (pid);
 
-    kill (collect_pdata->pid);
-    process_data_free (collect_pdata);
-    kill (cancel_pdata->pid);
-    process_data_free (cancel_pdata);
+    /* kill (collect_pdata->pid); */
+    /* process_data_free (collect_pdata); */
+    /* kill (cancel_pdata->pid); */
+    /* process_data_free (cancel_pdata); */
   }
 }