From 041c96ed89a8e1a583b416180977b0ce5b9b8d48 Mon Sep 17 00:00:00 2001
From: Matthew Sotoudeh <matthew@masot.net>
Date: Tue, 28 May 2024 14:59:23 -0700
Subject: Libimc dump

---
 libimc/_libimc.h | 94 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100644 libimc/_libimc.h

(limited to 'libimc/_libimc.h')

diff --git a/libimc/_libimc.h b/libimc/_libimc.h
new file mode 100644
index 0000000..3cf4dd2
--- /dev/null
+++ b/libimc/_libimc.h
@@ -0,0 +1,94 @@
+#pragma once
+
+#define _GNU_SOURCE
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+#include "libimc.h"
+
+// #define verbose(...) printf(__VA_ARGS__)
+#define verbose(...) 
+
+extern int MASTER2WORKER_RD[N_WORKERS];
+extern int MASTER2WORKER_WR[N_WORKERS];
+extern int WORKER2MASTER_RD[N_WORKERS];
+extern int WORKER2MASTER_WR[N_WORKERS];
+
+extern void launch_worker(unsigned int i);
+extern void worker_replay(char *path);
+
+enum message_type {
+    MSG_NONE,
+
+    // Worker -> Master
+    MSG_CAN_I_DIE,
+    MSG_DID_SPLIT,
+    MSG_NO_SPLIT,
+    MSG_PROGRESS,
+
+    // Master -> Worker
+    MSG_PLEASE_SPLIT,
+    MSG_OK_DIE,
+    MSG_NO_DIE,
+};
+
+struct message {
+    enum message_type message_type;
+    int new_id;
+    int pid;
+
+    size_t n_branches;
+    size_t n_bugs;
+};
+
+static void tell_pipe(int fd, uint8_t *ptr, size_t n) {
+    while (n) {
+        ssize_t n_sent = write(fd, ptr, n);
+        if (n_sent == -1 && (errno == EAGAIN || errno == EWOULDBLOCK))
+            n_sent = 0;
+        assert(n_sent >= 0);
+        ptr += n_sent;
+        n -= n_sent;
+    }
+}
+
+static void hear_pipe(int fd, uint8_t *ptr, size_t n) {
+    int any = 0;
+    while (n) {
+        ssize_t n_read = read(fd, ptr, n);
+        if (n_read == -1 && (errno == EAGAIN || errno == EWOULDBLOCK))
+            n_read = 0;
+        assert(n_read >= 0);
+        ptr += n_read;
+        n -= n_read;
+        if (!any && !n_read) return;
+        any = 1;
+    }
+}
+
+static void clear_pipe(int fd) {
+    uint8_t byte;
+    while (read(fd, &byte, 1) == 1);
+}
+
+static void tell_worker(struct message message, int idx) {
+    tell_pipe(MASTER2WORKER_WR[idx], (uint8_t*)&message, sizeof(message));
+}
+
+static void tell_master(struct message message, int idx) {
+    struct message *msg = calloc(1, sizeof(message));
+    *msg = message;
+    tell_pipe(WORKER2MASTER_WR[idx], (uint8_t*)msg, sizeof(message));
+}
+
+static struct message hear_worker(int idx) {
+    struct message message = {0};
+    hear_pipe(WORKER2MASTER_RD[idx], (uint8_t*)&message, sizeof(message));
+    return message;
+}
+
+static struct message hear_master(int idx) {
+    struct message message = {0};
+    hear_pipe(MASTER2WORKER_RD[idx], (uint8_t*)&message, sizeof(message));
+    return message;
+}
-- 
cgit v1.2.3