X-Git-Url: https://git.sesse.net/?p=cubemap;a=blobdiff_plain;f=main.cpp;h=e48bdf1f7761c2933d8279810602cbccd2a724ca;hp=2771f3904048fc86fde47097ed0d50b463f89576;hb=7ddd07eb95bb3216fad47aa6d3eb76a8b2648579;hpb=3fdf2e48bca3edcb0de00e0dbd0d0aae81ba9aa9

diff --git a/main.cpp b/main.cpp
index 2771f39..e48bdf1 100644
--- a/main.cpp
+++ b/main.cpp
@@ -31,6 +31,7 @@
 #include "serverpool.h"
 #include "input.h"
 #include "stats.h"
+#include "util.h"
 #include "version.h"
 #include "state.pb.h"
 
@@ -44,36 +45,6 @@ void hup(int ignored)
 	hupped = true;
 }
 
-// Serialize the given state to a file descriptor, and return the (still open)
-// descriptor.
-int make_tempfile(const CubemapStateProto &state)
-{
-	char tmpl[] = "/tmp/cubemapstate.XXXXXX";
-	int state_fd = mkstemp(tmpl);
-	if (state_fd == -1) {
-		perror("mkstemp");
-		exit(1);
-	}
-
-	string serialized;
-	state.SerializeToString(&serialized);
-
-	const char *ptr = serialized.data();
-	size_t to_write = serialized.size();
-	while (to_write > 0) {
-		ssize_t ret = write(state_fd, ptr, to_write);
-		if (ret == -1) {
-			perror("write");
-			exit(1);
-		}
-
-		ptr += ret;
-		to_write -= ret;
-	}
-
-	return state_fd;
-}
-
 CubemapStateProto collect_state(const timeval &serialize_start,
                                 const vector<Acceptor *> acceptors,
                                 const vector<Input *> inputs,
@@ -94,42 +65,6 @@ CubemapStateProto collect_state(const timeval &serialize_start,
 	return state;
 }
 
-// Read the state back from the file descriptor made by make_tempfile,
-// and close it.
-CubemapStateProto read_tempfile(int state_fd)
-{
-	if (lseek(state_fd, 0, SEEK_SET) == -1) {
-		perror("lseek");
-		exit(1);
-	}
-
-	string serialized;
-	char buf[4096];
-	for ( ;; ) {
-		ssize_t ret = read(state_fd, buf, sizeof(buf));
-		if (ret == -1) {
-			perror("read");
-			exit(1);
-		}
-		if (ret == 0) {
-			// EOF.
-			break;
-		}
-
-		serialized.append(string(buf, buf + ret));
-	}
-
-	close(state_fd);  // Implicitly deletes the file.
-
-	CubemapStateProto state;
-	if (!state.ParseFromString(serialized)) {
-		fprintf(stderr, "PANIC: Failed deserialization of state.\n");
-		exit(1);
-	}
-
-	return state;
-}
-	
 // Find all port statements in the configuration file, and create acceptors for htem.
 vector<Acceptor *> create_acceptors(
 	const Config &config,
@@ -336,7 +271,14 @@ start:
 	map<int, Acceptor *> deserialized_acceptors;
 	if (state_fd != -1) {
 		fprintf(stderr, "Deserializing state from previous process... ");
-		loaded_state = read_tempfile(state_fd);
+		string serialized;
+		if (!read_tempfile(atoi(argv[3]), &serialized)) {
+			exit(1);
+		}
+		if (!loaded_state.ParseFromString(serialized)) {
+			fprintf(stderr, "ERROR: Failed deserialization of state.\n");
+			exit(1);
+		}
 
 		serialize_start.tv_sec = loaded_state.serialize_start_sec();
 		serialize_start.tv_usec = loaded_state.serialize_start_usec();
@@ -423,8 +365,14 @@ start:
 	servers->stop();
 
 	fprintf(stderr, "Serializing state and re-execing...\n");
-	state_fd = make_tempfile(collect_state(
-		serialize_start, acceptors, inputs, servers));
+	CubemapStateProto state = collect_state(
+                serialize_start, acceptors, inputs, servers);
+	string serialized;
+	state.SerializeToString(&serialized);
+	state_fd = make_tempfile(serialized);
+	if (state_fd == -1) {
+		exit(1);
+	}
 	delete servers;
 
 	if (!dry_run_config(argv[0], config_filename)) {