Make wrappers work with sporadic apps

api/boinc_api.cpp

@@ -93,6 +93,8 @@
 #include <cstdio>
 #include <cstdarg>
 #include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
 #include <errno.h>
 #include <unistd.h>
 #include <sys/time.h>
@@ -144,6 +146,10 @@
     // CPPFLAGS=-DGETRUSAGE_IN_TIMER_THREAD
 #endif
 
+// Anything shared between the worker and timer thread
+// must be declared volatile to ensure that writes in one thread
+// are seen immediately by the other.
+
 const char* api_version = "API_VERSION_" PACKAGE_VERSION;
 static APP_INIT_DATA aid;
 static FILE_LOCK file_lock;
@@ -155,7 +161,7 @@
 static volatile bool ready_to_checkpoint = false;
 static volatile int in_critical_section = 0;
 static volatile double last_wu_cpu_time;
-static volatile bool standalone = false;
+static volatile bool standalone = true;
 static volatile double initial_wu_cpu_time;
 static volatile bool have_new_trickle_up = false;
 static volatile bool have_trickle_down = true;
@@ -194,7 +200,9 @@
 bool send_remote_desktop_addr = false;
 int app_min_checkpoint_period = 0;
     // min checkpoint period requested by app
-SPORADIC_AC_STATE ac_state;
+static volatile SPORADIC_AC_STATE ac_state;
+static volatile int ac_fd, ca_fd;
+static volatile bool do_sporadic_files;
 
 #define TIMER_PERIOD 0.1
     // Sleep interval for timer thread;
@@ -518,6 +526,57 @@
     return false;
 }
 
+// called once/sec in timer thread.
+// Copy sporadic app messages to/from files (for wrappers)
+//
+static void sporadic_files() {
+    static time_t last_ac_mod_time = 0;
+    static SPORADIC_CA_STATE last_ca_state = CA_NONE;
+    char buf[256];
+
+    // if C->A state has changed, write to file
+    //
+    if (last_ca_state != boinc_status.ca_state) {
+        sprintf(buf, "%d\n", boinc_status.ca_state);
+        lseek(ca_fd, 0, SEEK_SET);
+        if (write(ca_fd, buf, sizeof(buf))) {}
+            // one way to avoid warnings
+        last_ca_state = boinc_status.ca_state;
+    }
+
+    // check if app has updated file with A->C state
+    //
+    struct stat sbuf;
+    int ret = fstat(ac_fd, &sbuf);
+    if (!ret) {
+#ifdef _WIN32
+        time_t t = sbuf.st_mtime;
+#elif defined(__APPLE__)
+        time_t t = sbuf.st_mtimespec.tv_sec;
+#else
+        time_t t = sbuf.st_mtim.tv_sec;
+#endif
+        if (t != last_ac_mod_time) {
+            lseek(ac_fd, 0, SEEK_SET);
+            int nc = read(ac_fd, buf, sizeof(buf));
+            if (nc>0) {
+                int val;
+                buf[nc] = 0;
+                int n = sscanf(buf, "%d", &val);
+                if (n == 1) {
+                    ac_state = (SPORADIC_AC_STATE)val;
+                } else {
+                    ac_state = AC_NONE;
+                    fprintf(stderr, "API: error parsing AC state: %s\n", buf);
+                }
+                last_ac_mod_time = t;
+            } else {
+                fprintf(stderr, "API: error reading AC state: %d\n", nc);
+            }
+        }
+    }
+}
+
 #ifndef _WIN32
 // For multithread apps on Unix, the main process executes the following.
 //
@@ -687,6 +746,7 @@
         }
     }
 
+    standalone = false;
     retval = boinc_parse_init_data_file();
     if (retval) {
         standalone = true;
@@ -770,8 +830,10 @@
         boinc_msg_prefix(buf, sizeof(buf)), status
     );
     finishing = true;
-    boinc_sleep(2.0);   // let the timer thread send final messages
-    boinc_disable_timer_thread = true;     // then disable it
+    if (!standalone) {
+        boinc_sleep(2.0);   // let the timer thread send final messages
+        boinc_disable_timer_thread = true;     // then disable it
+    }
 
     if (options.main_program) {
         FILE* f = fopen(BOINC_FINISH_CALLED_FILE, "w");
@@ -882,6 +944,28 @@
     return 0;
 }
 
+int boinc_sporadic_dir(const char* dir) {
+    char buf[MAXPATHLEN];
+
+    do_sporadic_files = true;
+    sprintf(buf, "%s/ac", dir);
+    ac_fd = open(buf, O_CREAT|O_RDONLY, 0666);
+    if (ac_fd < 0) {
+        fprintf(stderr, "can't open sporadic file %s\n", buf);
+        do_sporadic_files = false;
+    }
+    sprintf(buf, "%s/ca", dir);
+    ca_fd = open(buf, O_CREAT|O_WRONLY, 0666);
+    if (ca_fd < 0) {
+        fprintf(stderr, "can't open sporadic file %s\n", buf);
+        do_sporadic_files = false;
+    }
+    if (!do_sporadic_files) return ERR_FOPEN;
+    boinc_status.ca_state = CA_DONT_COMPUTE;
+    ac_state = AC_NONE;
+    return 0;
+}
+
 // called from the timer thread if we need to exit,
 // e.g. quit message from client, or client has gone away
 //
@@ -993,6 +1077,10 @@
         snprintf(buf, sizeof(buf), "<bytes_received>%f</bytes_received>\n", _bytes_received);
         safe_strcat(msg_buf, buf);
     }
+    if (ac_state) {
+        sprintf(buf, "<sporadic_ac>%d</sporadic_ac>\n", ac_state);
+        strlcat(msg_buf, buf, sizeof(msg_buf));
+    }
 #ifdef MSGS_FROM_FILE
     if (fout) {
         fputs(msg_buf, fout);
@@ -1058,7 +1146,7 @@
         suspend_or_resume_descendants(false);
     }
     // if called from worker thread, sleep until suspension is over
-    // if called from time thread, don't need to do anything;
+    // if called from timer thread, don't need to do anything;
     // suspension is done by signal handler in worker thread
     //
     if (called_from_worker) {
@@ -1365,6 +1453,10 @@
         app_client_shm->shm->graphics_reply.send_msg(buf);
         send_remote_desktop_addr = false;
     }
+
+    if (do_sporadic_files) {
+        sporadic_files();
+    }
 }
 
 #ifdef _WIN32
@@ -1489,7 +1581,7 @@
 
 // called in the worker thread.
 // set up a handler for SIGALRM.
-// If Android, we'll get signals from the time thread.
+// If Android, we'll get signals from the timer thread.
 // otherwise, set an interval timer to deliver signals
 //
 static int start_worker_signals() {

api/boinc_api.h

@@ -148,6 +148,7 @@ extern int boinc_finish_message(
 );
 extern void boinc_sporadic_set_ac_state(SPORADIC_AC_STATE);
 extern SPORADIC_CA_STATE boinc_sporadic_get_ca_state();
+extern int boinc_sporadic_dir(const char*);
 
 /////////// API ENDS HERE
 

client/app_control.cpp

@@ -738,8 +738,8 @@ void ACTIVE_TASK_SET::send_heartbeats() {
         if (log_flags.heartbeat_debug) {
             if (sent) {
                 msg_printf(atp->result->project, MSG_INFO,
-                    "[heartbeat] Heartbeat sent to task %s",
-                    atp->result->name
+                    "[heartbeat] Heartbeat sent to task %s: %s",
+                    atp->result->name, buf
                 );
             } else {
                 msg_printf(atp->result->project, MSG_INFO,

client/app_test.cpp

@@ -63,9 +63,11 @@ void CLIENT_STATE::app_test_init() {
     // can put other stuff here like
     av->avg_ncpus = 1;
     av->flops = 1e9;
+#if 0
     av->gpu_ram = 1e7;
     av->gpu_usage.rsc_type = PROC_TYPE_NVIDIA_GPU;
     av->gpu_usage.usage = 1;
+#endif
     app_versions.push_back(av);
 
     WORKUNIT *wu = new WORKUNIT;
@@ -77,6 +79,7 @@ void CLIENT_STATE::app_test_init() {
     wu->rsc_fpops_bound = 1e12;
     wu->rsc_memory_bound = 1e9;
     wu->rsc_disk_bound = 1e9;
+    wu->command_line = "--sporadic";
     workunits.push_back(wu);
 
     RESULT *res = new RESULT;

client/cpu_sched.cpp

@@ -1626,10 +1626,12 @@ ACTIVE_TASK* CLIENT_STATE::get_task(RESULT* rp) {
     ACTIVE_TASK *atp = lookup_active_task_by_result(rp);
     if (!atp) {
         atp = new ACTIVE_TASK;
-        int retval = atp->get_free_slot(rp);
-        if (retval) {
-            delete atp;
-            return NULL;
+        if (!rp->project->app_test) {
+            int retval = atp->get_free_slot(rp);
+            if (retval) {
+                delete atp;
+                return NULL;
+            }
         }
         atp->init(rp);
         active_tasks.active_tasks.push_back(atp);

client/cs_cmdline.cpp

@@ -49,6 +49,7 @@ static void print_options(char* prog) {
         "    --abort_jobs_on_exit           when client exits, abort and report jobs\n"
         "    --allow_remote_gui_rpc         allow remote GUI RPC connections\n"
         "    --allow_multiple_clients       allow >1 instances per host\n"
+        "    --app_test F                   run a simulated job with the given app\n"
         "    --attach_project <URL> <key>   attach to a project\n"
         "    --check_all_logins             for idle detection, check remote logins too\n"
         "    --daemon                       run as daemon (Unix)\n"

client/cs_sporadic.cpp

@@ -82,6 +82,7 @@
 SPORADIC_RESOURCES sporadic_resources;
 
 void SPORADIC_RESOURCES::print() {
+    if (!ncpus_used) return;
     msg_printf(NULL, MSG_INFO, "Sporadic resources:");
     msg_printf(NULL, MSG_INFO, "   %f CPUs", ncpus_used);
     msg_printf(NULL, MSG_INFO, "   %f MB RAM", mem_used/MEGA);

samples/sporadic/sporadic.cpp

@@ -7,18 +7,29 @@
 //      when OK, compute for NCOMP secs
 //      suspend as needed
 //
-// computing is embedded in loop.
+// computing is embedded in the loop.
 // in a real app you'd want to use threads
 
+// by default this uses the BOINC API for communicating sporadic state.
+// --wrapped: use files instead (run under wrapper)
+
 #define NWAIT 10
 #define NCOMP 10
 
+#include <sys/types.h>
+#include <sys/stat.h>
+#ifndef _WIN32
+#include <unistd.h>
+#endif
+#include <fcntl.h>
+#include <stdio.h>
+
 #include "boinc_api.h"
 #include "util.h"
 #include "common_defs.h"
 
-void boinc_sporadic_set_ac_state(SPORADIC_AC_STATE);
-SPORADIC_CA_STATE boinc_sporadic_get_ca_state();
+bool wrapped = false;
+int ac_fd, ca_fd;
 
 void compute_one_sec() {
     double start = dtime();
@@ -31,22 +42,70 @@ void compute_one_sec() {
     }
 }
 
-int main(int, char**) {
-    boinc_init();
+void set_ac_state(SPORADIC_AC_STATE ac_state) {
+    static SPORADIC_AC_STATE last = AC_NONE;
+    if (wrapped) {
+        if (ac_state != last) {
+            char buf[256];
+            sprintf(buf, "%d\n", ac_state);
+            lseek(ac_fd, 0, SEEK_SET);
+            write(ac_fd, buf, strlen(buf));
+        }
+        last = ac_state;
+    } else {
+        boinc_sporadic_set_ac_state(ac_state);
+    }
+}
+
+SPORADIC_CA_STATE get_ca_state() {
+    if (wrapped) {
+        // could check mod time; don't bother
+        char buf[256];
+        lseek(ca_fd, 0, SEEK_SET);
+        read(ca_fd, buf, sizeof(buf));
+        int s;
+        int n = sscanf(buf, "%d", &s);
+        if (n==1) return (SPORADIC_CA_STATE)s;
+        fprintf(stderr, "can't read CA state\n");
+        exit(1);
+    } else {
+        return boinc_sporadic_get_ca_state();
+    }
+}
+
+int main(int argc, char** argv) {
     SPORADIC_CA_STATE ca_state;
     SPORADIC_AC_STATE ac_state;
+
+    for (int i=1; i<argc; i++) {
+        if (!strcmp(argv[i], "--wrapped")) {
+            wrapped = true;
+        }
+    }
+
+    if (wrapped) {
+        ca_fd = open("ca", O_RDONLY);
+        ac_fd = open("ac", O_WRONLY);
+        if (ca_fd<0 || ac_fd<0) {
+            fprintf(stderr, "can't open files\n");
+            exit(1);
+        }
+    } else {
+        boinc_init();
+    }
+
     fprintf(stderr, "starting\n");
     while (true) {
         // wait for a bit
         ac_state = AC_DONT_WANT_COMPUTE;
-        boinc_sporadic_set_ac_state(ac_state);
+        set_ac_state(ac_state);
         for (int i=0; i<NWAIT; i++) {
             fprintf(stderr, "sleep - don't want to compute\n");
             boinc_sleep(1);
         }
         // wait until client says we can possibly compute
         while (1) {
-            ca_state = boinc_sporadic_get_ca_state();
+            ca_state = get_ca_state();
             if (ca_state != CA_COULD_COMPUTE) {
                 fprintf(stderr, "sleep - waiting for COULD_COMPUTE\n");
                 boinc_sleep(1);
@@ -56,11 +115,11 @@ int main(int, char**) {
         }
         // tell the client we want to compute
         ac_state = AC_WANT_COMPUTE;
-        boinc_sporadic_set_ac_state(ac_state);
+        set_ac_state(ac_state);
         int n = NCOMP;
         while (true) {
             // compute only if client says so
-            ca_state = boinc_sporadic_get_ca_state();
+            ca_state = get_ca_state();
             fprintf(stderr, "CA state: %d\n", ca_state);
             if (ca_state == CA_COMPUTING) {
                 fprintf(stderr, "computing 1 sec\n");