Improved xdot calling

diff --git a/passes/cmds/show.cc b/passes/cmds/show.cc
index edc417c02c3b8f8ba525a2c203a46ff9602268ee..2779cabf9e3f510590d2601a49c20ca7c6e42f9b 100644 (file)
--- a/passes/cmds/show.cc
+++ b/passes/cmds/show.cc
@@ -794,7 +794,7 @@ struct ShowPass : public Pass {
                        log_cmd_error("Nothing there to show.\n");
 
                if (format != "dot" && !format.empty()) {
-                       std::string cmd = stringf("dot -T%s -o '%s' '%s'", format.c_str(), out_file.c_str(), dot_file.c_str());
+                       std::string cmd = stringf("dot -T%s -o '%s.new' '%s' && mv '%s.new' '%s'", format.c_str(), out_file.c_str(), dot_file.c_str(), dot_file.c_str(), dot_file.c_str());
                        log("Exec: %s\n", cmd.c_str());
                        if (run_command(cmd) != 0)
                                log_cmd_error("Shell command failed!\n");
@@ -807,7 +807,7 @@ struct ShowPass : public Pass {
                                log_cmd_error("Shell command failed!\n");
                } else
                if (format.empty()) {
-                       std::string cmd = stringf("fuser -s '%s' || xdot '%s' < '%s' &", dot_file.c_str(), dot_file.c_str(), dot_file.c_str());
+                       std::string cmd = stringf("{ test -f '%s.pid' && fuser -s '%s.pid'; } || ( echo $$ >&3; exec xdot '%s'; ) 3> '%s.pid' &", dot_file.c_str(), dot_file.c_str(), dot_file.c_str(), dot_file.c_str());
                        log("Exec: %s\n", cmd.c_str());
                        if (run_command(cmd) != 0)
                                log_cmd_error("Shell command failed!\n");