go(report): aggregate all tex files tracking plots

algo/algo.go

@@ -16,7 +16,7 @@
 type Values []float64
 
 // DoRandomSearch executes a search using the 'Random search' method.
-func DoRandomSearch(wg *sync.WaitGroup) {
+func DoRandomSearch(wg *sync.WaitGroup, m *sync.Mutex) {
 	defer wg.Done()
 
 	printRandomSearch("starting...")
@@ -54,14 +54,17 @@ funcCount := len(bench.Functions)
 		pLs = append(pLs, pL)
 	}
 
+	// protect access to shared data.
+	m.Lock()
 	report.SavePicsToFile(pLs, "Random Search")
+	m.Unlock()
 
 	stats.SaveTable("Random Search", algoStats)
 }
 
 // DoStochasticHillClimbing performs a search using the 'Stochastic Hill
 // Climbing' method.
-func DoStochasticHillClimbing(wg *sync.WaitGroup) {
+func DoStochasticHillClimbing(wg *sync.WaitGroup, m *sync.Mutex) {
 	defer wg.Done()
 
 	printSHC("starting...")
@@ -98,7 +101,10 @@ funcCount := len(bench.Functions)
 		pLs = append(pLs, pL)
 	}
 
+	// protect access to shared data.
+	m.Lock()
 	report.SavePicsToFile(pLs, "Stochastic Hill Climbing")
+	m.Unlock()
 
 	stats.SaveTable("Stochastic Hill CLimbing", algoStats)
 }

algo/algo_test.go

@@ -13,10 +13,12 @@
 
 var wg sync.WaitGroup
 
+var m sync.Mutex
+
 func TestDoRandomSearchExec(t *testing.T) {
 	wg.Add(1)
 
-	go DoRandomSearch(&wg)
+	go DoRandomSearch(&wg, &m)
 
 	wg.Wait()
 
@@ -36,7 +38,7 @@ func TestDoRandomSearchExec(t *testing.T) {
 func TestDoSHCExec(t *testing.T) {
 	wg.Add(1)
 
-	go DoStochasticHillClimbing(&wg)
+	go DoStochasticHillClimbing(&wg, &m)
 
 	wg.Wait()
 

main.go

@@ -23,11 +23,14 @@ func main() {
 
 	wg.Add(algoCount)
 
-	go algo.DoRandomSearch(&wg)
-	go algo.DoStochasticHillClimbing(&wg)
+	var m sync.Mutex
+
+	go algo.DoRandomSearch(&wg, &m)
+	go algo.DoStochasticHillClimbing(&wg, &m)
 
 	wg.Wait()
 
+	report.SaveTexAllPics()
 	report.Print()
 
 	log.Println("looks like we're done")

report/allPics.go

@@ -0,0 +1,64 @@
+// Copyright 2022 wanderer <a_mirre at utb dot cz>
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package report
+
+import (
+	"log"
+	"os"
+	"text/template"
+	"time"
+)
+
+// picTexFiles holds paths to tex files including pics of a certain algo.
+type picTexFiles struct {
+	Algo      string
+	FilePaths []string
+}
+
+// allThePics contains a slice of picTexFiles and consequently paths to all pic
+// tex files generated during a single run of the program.
+type allThePics struct {
+	TexFiles []picTexFiles
+}
+
+var allPics = &allThePics{}
+
+// SaveTexAllPics feeds all paths of generated pics to a template that creates
+// `allpics.tex` file, which then aggregates all tex files tracking plot pics
+// in one place.
+func SaveTexAllPics() {
+	a := allPics
+	texAllPicsFile := GetTexDir() + "allpics" + ".tex"
+	tmplAllPicsFile := "report/allpics.tmpl"
+
+	if _, err := os.Stat(tmplAllPicsFile); err != nil {
+		// TODO(me): fix this.
+		// this block is relevant for the unit test path, somehow the file is
+		// not found as defined above.
+		log.Println(err, `, weird test behaviour , prepending "../"`)
+
+		tmplAllPicsFile = "../" + tmplAllPicsFile
+	}
+
+	tmplAllPics := template.Must(template.ParseFiles(tmplAllPicsFile))
+
+	f, err := os.Create(texAllPicsFile)
+	if err != nil {
+		log.Println(err)
+	}
+
+	defer f.Close()
+
+	err = tmplAllPics.Execute(f, struct {
+		AllPics   allThePics
+		Timestamp time.Time
+	}{
+		AllPics:   *a,
+		Timestamp: time.Now(),
+	})
+
+	if err != nil {
+		log.Println(err)
+	}
+}

report/allpics.tmpl

@@ -0,0 +1,16 @@
+% Code generated by math-optim; DO NOT EDIT.
+%
+% This file was generated by robots at
+% {{ .Timestamp }}
+% source: git.dotya.ml/wanderer/math-optim/report/allpics.tmpl
+
+% This file is a part of the math-optim project.
+% project homepage: https://git.dotya.ml/wanderer/math-optim/
+{{ range $i, $v := .AllPics.TexFiles }}
+\section{Algo: {{ $v.Algo -}} }
+{{- range $j, $u := $v.FilePaths }}
+\include{ {{- $u -}} }
+{{- end }}
+{{ end -}}
+
+% vim: ft=gotexttmpl.tex ts=2 sts=2 sw=2 bs=2 expandtab

report/pic.go

@@ -6,6 +6,7 @@
 import (
 	"log"
 	"os"
+	"sort"
 	"text/template"
 	"time"
 
@@ -38,6 +39,10 @@ func NewPicList() *PicList {
 // SavePicsToFile saves each pic list for all bench funcs of a specified algo
 // to a file.
 func SavePicsToFile(pls []PicList, algoName string) {
+	var paths []string
+
+	ptf := picTexFiles{Algo: algoName}
+
 	for _, p := range pls {
 		safeName := util.SanitiseFName(p.Algo + "-" + p.Bench)
 		texPicsFile := GetTexDir() + "pics-" + safeName + ".tex"
@@ -54,6 +59,10 @@ func SavePicsToFile(pls []PicList, algoName string) {
 
 		tmplPics := template.Must(template.ParseFiles(tmplPicsFile))
 
+		paths = append(paths, texPicsFile)
+		// keep the slice sorted.
+		sort.Strings(paths)
+
 		// make sure the output dir exists, else die early.
 		if err := util.CreatePath(GetTexDir()); err != nil {
 			log.Fatalln(err)
@@ -81,4 +90,7 @@ func SavePicsToFile(pls []PicList, algoName string) {
 			log.Println(err)
 		}
 	}
+
+	ptf.FilePaths = paths
+	allPics.TexFiles = append(allPics.TexFiles, ptf)
 }