#! /bin/bash

#
# This file has several tests to check for memory leaks.
# valgrind is used so make sure you have it installed
#


function needle { #needle #haystack
	python -c "import re; print(re.search(r'$1', '$2').group(0))"
}
function extract_num { #needle with number #haystack
	string=$(needle "$1" "$2")
	needle "[0-9]*" "$string"
}
function err { #string #log
	echo "------------------- ERROR ------------------------"
	echo "$1"
	echo "$2" >> memleaks.log
	exit 1
}


function test_single_thread_alloc {
	
	read -d '' code <<"EOF"
#include <stdio.h>
#include <unistd.h>
#include <time.h>
#include "../thpool.h"

int main(){

	thpool_t* threadpool;
	threadpool = thpool_init(1);
	thpool_destroy(threadpool);

	return 0;
}
EOF
	
	echo "Testing single thread creation and kill"
	echo "$code" > _test_.c
	gcc _test_.c ../thpool.c -pthread -o test
	output=$(valgrind --leak-check=full --track-origins=yes ./test 2>&1 /dev/null)
	heap_usage=$(echo "$output" | grep "total heap usage")
	allocs=$(extract_num "[0-9]* allocs" "$heap_usage")
	frees=$(extract_num "[0-9]* frees" "$heap_usage")
	if [ "$allocs" == "$frees" ]; then
		return false
	fi
	err "Allocated $allocs times but freed only $frees" "$output"
}







# Run tests
test_single_thread_alloc

echo "No errors"