Unix priority bug

svn path=/trunk/boinc/; revision=9906

apps/upper_case.C

@@ -25,6 +25,11 @@
 // -exit:     exit with status -10 (for testing exit handler)
 //
 
+// NOTE: this is NOT a sample BOINC application.
+// Look in boinc_samples/uppercase for that.
+// This is a bare-bones application (no graphics)
+// that's used by the test_uc.py script.
+
 #ifdef _WIN32
 #include "boinc_win.h"
 #else
@@ -41,13 +46,6 @@
 #include <unistd.h>
 #endif
 
-#define BOINC_APP_GRAPHICS
-
-#ifdef BOINC_APP_GRAPHICS
-#include "boinc_gl.h"
-#include "graphics_api.h"
-#endif
-
 #include "diagnostics.h"
 #include "util.h"
 #include "filesys.h"
@@ -60,12 +58,6 @@ using std::string;
 #define INPUT_FILENAME "in"
 #define OUTPUT_FILENAME "out"
 
-#ifdef BOINC_APP_GRAPHICS
-char display_buf[10];
-double xPos=0, yPos=0;
-double xDelta=0.03, yDelta=0.07;
-#endif
-
 bool run_slow;
 bool raise_signal;
 bool random_exit;
@@ -160,9 +152,6 @@ void worker() {
         c = fgetc(in);
 
         if (c == EOF) break;
-#ifdef BOINC_APP_GRAPHICS
-        sprintf(display_buf, "%c -> %c", c, toupper(c));
-#endif
         c = toupper(c);
         out._putchar(c);
         nchars++;
@@ -236,47 +225,9 @@ int main(int argc, char **argv) {
 
     fprintf(stderr, "APP: upper_case: starting, argc %d\n", argc);
 
-#ifdef BOINC_APP_GRAPHICS
-    strcpy(display_buf, "(none)\0");
-    retval = boinc_init_graphics(worker);
-    if (retval) exit(retval);
-#else
     retval = boinc_init();
     if (retval) exit(retval);
     worker();
-#endif
-}
-
-#ifdef BOINC_APP_GRAPHICS
-extern GLuint main_font;
-
-void app_init_gl() {}
-
-bool app_render(int xs, int ys, double time_of_day) {
-    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);    // Clear Screen And Depth Buffer
-    glLoadIdentity();                                    // Reset The Current Modelview Matrix
-    glColor3f(1,1,1);
-
-    glRasterPos2f(xPos, yPos);
-    //glPrint(main_font, display_buf);
-
-    xPos += xDelta;
-    yPos += yDelta;
-    if (xPos < -1 || xPos > 1) xDelta *= -1;
-    if (yPos < -1 || yPos > 1) yDelta *= -1;
-
-    glRasterPos2f(-0.9, 0.9);
-    //glPrint(main_font, "User: %s", uc_aid.user_name);
-
-    glRasterPos2f(-0.9, 0.8);
-    //glPrint(main_font, "Team: %s", uc_aid.team_name);
-
-    glRasterPos2f(-0.9, 0.7);
-    //glPrint(main_font, "CPU Time: %f", uc_aid.wu_cpu_time);
-
-    return true;                                        // Everything Went OK
 }
 
-#endif
-
 const char *BOINC_RCSID_33ac47a071 = "$Id$";

checkin_notes

@@ -3835,3 +3835,19 @@ Charlie 14 Apr 2006
     clientgui/
         BOINCGUIApp.cpp
         MainFrame.cpp, .h
+
+David  14 Apr 2006
+    - Core client: change the way that application priority is set on Unix
+        Old: fork/exec app, then setpriority(pid)
+            PROBLEM: race condition.  When the app starts,
+            it's initially at regular priority.
+            If it immediately creates another process,
+            the child process has regular priority
+            (and continues to even after the app's priority is lowered).
+        New: fork, lower priority, exec.
+        (From Mike Fleetwood)
+
+    apps/
+        upper_case.C
+    client/
+        app_start.C

client/app_start.C

@@ -539,6 +539,12 @@ int ACTIVE_TASK::start(bool first_time) {
         //
         freopen(STDERR_FILE, "a", stderr);
 
+        // set idle process priority
+#ifdef HAVE_SETPRIORITY
+        if (setpriority(PRIO_PROCESS, 0, PROCESS_IDLE_PRIORITY)) {
+            perror("setpriority");
+        }
+#endif
         argv[0] = exec_name;
         char cmdline[8192];
         strcpy(cmdline, wup->command_line.c_str());
@@ -556,13 +562,6 @@ int ACTIVE_TASK::start(bool first_time) {
 
     scope_messages.printf("ACTIVE_TASK::start(): forked process: pid %d\n", pid);
 
-    // set idle process priority
-#ifdef HAVE_SETPRIORITY
-    if (setpriority(PRIO_PROCESS, pid, PROCESS_IDLE_PRIORITY)) {
-        perror("setpriority");
-    }
-#endif
-
 #endif
     task_state = PROCESS_EXECUTING;
     return 0;

doc/boinc_news.inc

@@ -1,6 +1,21 @@
 <?
 
 $project_news = array(
+array("April 13, 2006",
+    "According to various <a href=links.php>statistics sites</a>,
+    over one million computers have now contributed
+    processing power to BOINC projects.
+    We're currently achieving a sustained processing rate
+    of over 400 TeraFLOPS - the world's most powerful supercomputer
+    by a wide margin.
+    Congratulations and thanks to everyone!
+"),
+array("April 13, 2006",
+    "We have developed an <a href=example.php>example application</a>,
+    together with project files and Makefiles for Windows, Mac, and Linux.
+    The application demonstrates how to do checkpoint/restart and graphics.
+    Projects can use this as a framework for building their own applications.
+"),
 array("April 6, 2006",
     "Thanks to the efforts of
     <a href=http://alioth.debian.org/projects/pkg-boinc/>volunteers</a>,

doc/create_project.php

@@ -58,9 +58,9 @@
 </ul>
 <li> Application development
 <ul>
+<li><a href=example.php>Example application</a>
 <li><a href=app_dev.php>Application development tips</a>
 <li> <a href=app_debug.php>Application debugging</a>
-<li><a href=myers.txt>App development cookbook</a> (courtesy of Eric Myers from Vassar)
 </ul>
 <li><a href=fortran.php>FORTRAN applications</a>
 <li><a href=compound_app.php>Compound applications</a>

doc/source_code.php

@@ -4,16 +4,27 @@
 page_head("Getting source code");
 echo "
 
-<p>
-You will need certain
-<a href=build.php>software prerequisites</a>
-before compiling BOINC.
+<h2>CVS repositories</h2>
+
+The BOINC source code is maintained two CVS modules:
+<ul>
+<li><b>boinc</b> contains the source code for all parts of BOINC itself
+(client, server, web, database).
+<li><b>boinc_samples</b> contains a sample BOINC application, <b>upper_case</b>,
+together with Windows and Mac project files and a Linux makefile
+for building the application.
+It also includes some bits of code (GLUT, jpeglib, etc.)
+that many applications will need, but which are not part of BOINC.
+
+</ul>
+If you are developing an application,
+you should check out these modules in the same parent directory.
 
-<h2>CVS branches</h2>
+<h2>CVS tags</h2>
 <p>
-The BOINC source code is maintained in CVS.
-The trunk is the development version,
-which may not compile or run.
+In the <b>boinc</b> module,
+the trunk is the development version;
+it may not compile or run.
 Other versions are tagged as follows:
 <dl>
 <dt>
@@ -51,16 +62,14 @@
 to get the stable version.
 <p>
 <li>
-Browse the CVS repository via a
-<a href=http://boinc.berkeley.edu/cgi-bin/cvsweb.cgi/boinc/>web-based interface</a>
-(this is useful for getting individual files,
- or seeing the revision history).
+Browse the 
+<a href=http://boinc.berkeley.edu/cgi-bin/cvsweb.cgi/boinc/>boinc</a>
+or
+<a href=http://setiathome.berkeley.edu/cgi-bin/cvsweb.cgi/boinc_samples/>boinc_samples</a> modules
+via a web-based interface.
+This is useful for getting individual files, or seeing the revision history.
+
 </ul>
-<p>
-The BOINC source code is about 20-25 Mbytes.
-<p>
-Source code for a typical BOINC application,
-SETI@home, is <a href=http://setiweb.ssl.berkeley.edu/sah/sah_porting.php>here</a>.
 
 ";