chiark / gitweb /
new energy calculation but anarres crashes
[moebius2.git] / energy.c
index 07a4100..73308ac 100644 (file)
--- a/energy.c
+++ b/energy.c
@@ -3,40 +3,52 @@
  */
 
 #include "common.h"
-#include "bgl.h"
+#include "minimise.h"
 #include "mgraph.h"
 
 #include <gsl/gsl_errno.h>
 #include <gsl/gsl_multimin.h>
 
+#include <signal.h>
+#include <sys/time.h>
+
 static const char *input_file, *output_file;
 static char *output_file_tmp;
 
 static void compute_vertex_areas(const Vertices vertices, double areas[N]);
 static double best_energy= DBL_MAX;
 
-static void addcost(double *energy, double tweight, double tcost);
-#define COST(weight, compute) addcost(&energy, (weight), (compute))
+enum printing_instance { pr_cost, pr_size, pr__max };
+
+static void addcost(double *energy, double tweight, double tcost, int pr);
+#define COST(weight, compute) addcost(&energy, (weight), (compute), printing)
+static int printing_check(enum printing_instance);
+static void printing_init(void);
 
 /*---------- main energy computation and subroutines ----------*/
 
 static double compute_energy(const Vertices vertices) {
   double vertex_areas[N], energy;
+  int printing;
 
   compute_vertex_areas(vertices,vertex_areas);
   energy= 0;
-  printf("cost > energy |");
 
-  COST(1e4, edgewise_vertex_displacement_cost(vertices));
+  printing= printing_check(pr_cost);
+
+  if (printing) printf("cost > energy |");
+
+//  COST(1e4, edgewise_vertex_displacement_cost(vertices));
   COST(1e2, graph_layout_cost(vertices,vertex_areas));
 //  COST(1e4, noncircular_rim_cost(vertices));
 
-  printf("| total %# e |", energy);
+  if (printing) printf("| total %# e |", energy);
+
   if (energy < best_energy) {
     FILE *best_f;
     int r;
 
-    printf(" BEST");
+    if (printing) printf(" BEST");
 
     best_f= fopen(output_file_tmp,"wb");  if (!best_f) diee("fopen new out");
     r= fwrite(vertices,sizeof(Vertices),1,best_f); if (r!=1) diee("fwrite");
@@ -45,15 +57,17 @@ static double compute_energy(const Vertices vertices) {
 
     best_energy= energy;
   }
-  putchar('\n');
-  flushoutput();
+  if (printing) {
+    putchar('\n');
+    flushoutput();
+  }
 
   return energy;
 }
 
-static void addcost(double *energy, double tweight, double tcost) {
+static void addcost(double *energy, double tweight, double tcost, int pr) {
   double tenergy= tweight * tcost;
-  printf(" %# e > %# e |", tcost, tenergy);
+  if (pr) printf(" %# e > %# e |", tcost, tenergy);
   *energy += tenergy;
 }
 
@@ -134,6 +148,7 @@ int main(int argc, const char *const *argv) {
   if (asprintf(&output_file_tmp,"%s.new",output_file) <= 0) diee("asprintf");
 
   graph_layout_prepare();
+  printing_init();
   
   minimiser= gsl_multimin_fminimizer_alloc
     (gsl_multimin_fminimizer_nmsimplex, DIM);
@@ -172,7 +187,8 @@ int main(int argc, const char *const *argv) {
     size= gsl_multimin_fminimizer_size(minimiser);
     r= gsl_multimin_test_size(size, stop_epsilon);
 
-    printf("%*s size %# e, r=%d\n", 135,"", size, r);
+    if (printing_check(pr_size))
+      printf("%*s size %# e, r=%d\n", 135,"", size, r);
     flushoutput();
 
     if (r==GSL_SUCCESS) break;
@@ -267,3 +283,56 @@ double noncircular_rim_cost(const Vertices vertices) {
   }
   return cost;
 }
+
+/*---------- printing rate limit ----------*/
+
+static volatile unsigned print_todo;
+static sigset_t print_alarmset;
+
+static int printing_check(enum printing_instance which) {
+  static int skipped[pr__max];
+  
+  unsigned bits= 1u << which;
+  int sk;
+
+  if (!(print_todo & bits)) {
+    skipped[which]++;
+    return 0;;
+  }
+
+  sigprocmask(SIG_BLOCK,&print_alarmset,0);
+  print_todo &= ~bits;
+  sigprocmask(SIG_UNBLOCK,&print_alarmset,0);
+
+  sk= skipped[which];
+  if (sk) printf("[%4d] ",sk);
+  else printf("       ");
+  skipped[which]= 0;
+
+  return 1;
+}
+
+static void alarmhandler(int ignored) {
+  print_todo= ~0u;
+}
+
+static void printing_init(void) {
+  struct sigaction sa;
+  struct itimerval itv;
+
+  sigemptyset(&print_alarmset);
+  sigaddset(&print_alarmset,SIGALRM);
+
+  sa.sa_handler= alarmhandler;
+  sa.sa_mask= print_alarmset;
+  sa.sa_flags= SA_RESTART;
+  if (sigaction(SIGALRM,&sa,0)) diee("sigaction ALRM");
+  
+  itv.it_interval.tv_sec= 0;
+  itv.it_interval.tv_usec= 200000;
+  itv.it_value= itv.it_interval;
+
+  if (setitimer(ITIMER_REAL,&itv,0)) diee("setitimer REAL");
+
+  raise(SIGALRM);
+}