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taskflow/unittests/test_basics.cpp at task_isolation · ModuleWorks/taskflow · GitHub
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#
define
DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
#
include
<
doctest.h
>
#
include
<
taskflow/taskflow.hpp
>
#
include
<
taskflow/algorithm/for_each.hpp
>
#
include
<
taskflow/algorithm/reduce.hpp
>
//
--------------------------------------------------------
//
Testcase: Type
//
--------------------------------------------------------
TEST_CASE
(
"
Type
"
*
doctest::timeout
(
300
)) {
tf::Taskflow taskflow, taskflow2;
auto
t1 = taskflow.
emplace
([](){});
auto
t2 = taskflow.
emplace
([](){
return
1
; });
auto
t3 = taskflow.
emplace
([](tf::Subflow&){ });
auto
t4 = taskflow.
composed_of
(taskflow2);
auto
t5 = taskflow.
emplace
([](){
return
tf::SmallVector{
1
,
2
}; });
auto
t6 = taskflow.
emplace
([](tf::Runtime&){});
REQUIRE
(t1.
type
() == tf::TaskType::
STATIC
);
REQUIRE
(t2.
type
() == tf::TaskType::
CONDITION
);
REQUIRE
(t3.
type
() == tf::TaskType::
SUBFLOW
);
REQUIRE
(t4.
type
() == tf::TaskType::
MODULE
);
REQUIRE
(t5.
type
() == tf::TaskType::
CONDITION
);
REQUIRE
(t6.
type
() == tf::TaskType::
RUNTIME
);
}
//
--------------------------------------------------------
//
Testcase: Builder
//
--------------------------------------------------------
TEST_CASE
(
"
Builder
"
*
doctest::timeout
(
300
)) {
SUBCASE
(
"
EmptyFlow
"
) {
for
(
unsigned
W=
1
; W<
32
; ++W) {
tf::Executor
executor
(W);
tf::Taskflow taskflow;
REQUIRE
(taskflow.
num_tasks
() ==
0
);
REQUIRE
(taskflow.
empty
() ==
true
);
executor.
run
(taskflow).
wait
();
}
}
const
size_t
num_tasks =
100
;
tf::Taskflow taskflow;
tf::Executor executor;
std::atomic<
int
> counter {
0
};
std::vector<tf::Task> silent_tasks;
std::vector<tf::Task> tasks;
SUBCASE
(
"
Placeholder
"
) {
for
(
size_t
i=
0
; i<num_tasks; ++i) {
silent_tasks.
emplace_back
(taskflow.
placeholder
().
name
(
std::to_string
(i)));
}
for
(
size_t
i=
0
; i<num_tasks; ++i) {
REQUIRE
(silent_tasks[i].
name
() ==
std::to_string
(i));
REQUIRE
(silent_tasks[i].
num_predecessors
() ==
0
);
REQUIRE
(silent_tasks[i].
num_successors
() ==
0
);
}
for
(
auto
& task : silent_tasks) {
task.
work
([&counter](){ counter++; });
}
executor.
run
(taskflow).
get
();
REQUIRE
(counter == num_tasks);
}
SUBCASE
(
"
EmbarrassinglyParallel
"
){
for
(
size_t
i=
0
;i<num_tasks;i++) {
tasks.
emplace_back
(taskflow.
emplace
([&counter]() {counter +=
1
;}));
}
REQUIRE
(taskflow.
num_tasks
() == num_tasks);
executor.
run
(taskflow).
get
();
REQUIRE
(counter == num_tasks);
REQUIRE
(taskflow.
num_tasks
() ==
100
);
counter =
0
;
for
(
size_t
i=
0
;i<num_tasks;i++){
silent_tasks.
emplace_back
(taskflow.
emplace
([&counter]() {counter +=
1
;}));
}
REQUIRE
(taskflow.
num_tasks
() == num_tasks *
2
);
executor.
run
(taskflow).
get
();
REQUIRE
(counter == num_tasks *
2
);
REQUIRE
(taskflow.
num_tasks
() ==
200
);
}
SUBCASE
(
"
BinarySequence
"
){
for
(
size_t
i=
0
;i<num_tasks;i++){
if
(i%
2
==
0
){
tasks.
emplace_back
(
taskflow.
emplace
([&counter]() {
REQUIRE
(counter ==
0
); counter +=
1
;})
);
}
else
{
tasks.
emplace_back
(
taskflow.
emplace
([&counter]() {
REQUIRE
(counter ==
1
); counter -=
1
;})
);
}
if
(i>
0
){
//
tasks[i-1].first.precede(tasks[i].first);
tasks[i-
1
].
precede
(tasks[i]);
}
if
(i==
0
) {
//
REQUIRE(tasks[i].first.num_predecessors() == 0);
REQUIRE
(tasks[i].
num_predecessors
() ==
0
);
}
else
{
//
REQUIRE(tasks[i].first.num_predecessors() == 1);
REQUIRE
(tasks[i].
num_predecessors
() ==
1
);
}
}
executor.
run
(taskflow).
get
();
}
SUBCASE
(
"
LinearCounter
"
){
for
(
size_t
i=
0
;i<num_tasks;i++){
tasks.
emplace_back
(
taskflow.
emplace
([&counter, i]() {
REQUIRE
(counter == i); counter +=
1
;}
)
);
if
(i>
0
) {
tasks[i-
1
].
precede
(tasks[i]);
}
}
executor.
run
(taskflow).
get
();
REQUIRE
(counter == num_tasks);
REQUIRE
(taskflow.
num_tasks
() == num_tasks);
}
SUBCASE
(
"
Broadcast
"
){
auto
src = taskflow.
emplace
([&counter]() {counter -=
1
;});
for
(
size_t
i=
1
; i<num_tasks; i++){
silent_tasks.
emplace_back
(
taskflow.
emplace
([&counter]() {
REQUIRE
(counter == -
1
);})
);
src.
precede
(silent_tasks.
back
());
}
executor.
run
(taskflow).
get
();
REQUIRE
(counter == -
1
);
REQUIRE
(taskflow.
num_tasks
() == num_tasks);
}
SUBCASE
(
"
Succeed
"
){
auto
dst = taskflow.
emplace
([&]() {
REQUIRE
(counter == num_tasks -
1
);});
for
(
size_t
i=
1
;i<num_tasks;i++){
silent_tasks.
emplace_back
(
taskflow.
emplace
([&counter]() {counter +=
1
;})
);
dst.
succeed
(silent_tasks.
back
());
}
executor.
run
(taskflow).
get
();
REQUIRE
(counter == num_tasks -
1
);
REQUIRE
(taskflow.
num_tasks
() == num_tasks);
}
SUBCASE
(
"
MapReduce
"
){
auto
src = taskflow.
emplace
([&counter]() {counter =
0
;});
auto
dst = taskflow.
emplace
(
[&counter, num_tasks]() {
REQUIRE
(counter == num_tasks);}
);
for
(
size_t
i=
0
;i<num_tasks;i++){
silent_tasks.
emplace_back
(
taskflow.
emplace
([&counter]() {counter +=
1
;})
);
src.
precede
(silent_tasks.
back
());
dst.
succeed
(silent_tasks.
back
());
}
executor.
run
(taskflow).
get
();
REQUIRE
(taskflow.
num_tasks
() == num_tasks +
2
);
}
SUBCASE
(
"
Linearize
"
){
for
(
size_t
i=
0
;i<num_tasks;i++){
silent_tasks.
emplace_back
(
taskflow.
emplace
([&counter, i]() {
REQUIRE
(counter == i); counter +=
1
;}
)
);
}
taskflow.
linearize
(silent_tasks);
executor.
run
(taskflow).
get
();
REQUIRE
(counter == num_tasks);
REQUIRE
(taskflow.
num_tasks
() == num_tasks);
}
SUBCASE
(
"
Kite
"
){
auto
src = taskflow.
emplace
([&counter]() {counter =
0
;});
for
(
size_t
i=
0
;i<num_tasks;i++){
silent_tasks.
emplace_back
(
taskflow.
emplace
([&counter, i]() {
REQUIRE
(counter == i); counter +=
1
; }
)
);
src.
precede
(silent_tasks.
back
());
}
taskflow.
linearize
(silent_tasks);
auto
dst = taskflow.
emplace
(
[&counter, num_tasks]() {
REQUIRE
(counter == num_tasks);}
);
for
(
auto
task : silent_tasks) dst.
succeed
(task);
executor.
run
(taskflow).
get
();
REQUIRE
(taskflow.
num_tasks
() == num_tasks +
2
);
}
}
//
--------------------------------------------------------
//
Testcase: Creation
//
--------------------------------------------------------
TEST_CASE
(
"
Creation
"
*
doctest::timeout
(
300
)) {
std::vector<
int
>
dummy
(
1000
, -
1
);
auto
create_taskflow = [&] () {
for
(
int
i=
0
; i<
10
; ++i) {
tf::Taskflow tf;
tf.
for_each
(dummy.
begin
(), dummy.
end
(), [] (
int
) {});
}
};
SUBCASE
(
"
One
"
) {
create_taskflow
();
REQUIRE
(dummy.
size
() ==
1000
);
for
(
auto
item : dummy) {
REQUIRE
(item == -
1
);
}
}
SUBCASE
(
"
Two
"
) {
std::thread
t1
(create_taskflow);
std::thread
t2
(create_taskflow);
t1.
join
();
t2.
join
();
REQUIRE
(dummy.
size
() ==
1000
);
for
(
auto
item : dummy) {
REQUIRE
(item == -
1
);
}
}
SUBCASE
(
"
Four
"
) {
std::thread
t1
(create_taskflow);
std::thread
t2
(create_taskflow);
std::thread
t3
(create_taskflow);
std::thread
t4
(create_taskflow);
t1.
join
();
t2.
join
();
t3.
join
();
t4.
join
();
REQUIRE
(dummy.
size
() ==
1000
);
for
(
auto
item : dummy) {
REQUIRE
(item == -
1
);
}
}
}
//
--------------------------------------------------------
//
Testcase: Removal
//
--------------------------------------------------------
TEST_CASE
(
"
Removal
"
*
doctest::timeout
(
300
)) {
tf::Taskflow taskflow;
auto
a = taskflow.
placeholder
().
name
(
"
a
"
);
auto
b = taskflow.
placeholder
().
name
(
"
b
"
);
auto
c = taskflow.
placeholder
().
name
(
"
c
"
);
auto
d = taskflow.
placeholder
().
name
(
"
d
"
);
REQUIRE
(a.
num_successors
() ==
0
);
REQUIRE
(a.
num_predecessors
() ==
0
);
REQUIRE
(a.
num_successors
() ==
0
);
REQUIRE
(a.
num_predecessors
() ==
0
);
a.
precede
(b, c, d);
REQUIRE
(a.
num_successors
() ==
3
);
REQUIRE
(b.
num_predecessors
() ==
1
);
REQUIRE
(c.
num_predecessors
() ==
1
);
REQUIRE
(d.
num_predecessors
() ==
1
);
taskflow.
remove_dependency
(a, b);
REQUIRE
(a.
num_successors
() ==
2
);
REQUIRE
(b.
num_predecessors
() ==
0
);
taskflow.
remove_dependency
(a, c);
REQUIRE
(a.
num_successors
() ==
1
);
REQUIRE
(c.
num_predecessors
() ==
0
);
taskflow.
remove_dependency
(a, d);
REQUIRE
(a.
num_successors
() ==
0
);
REQUIRE
(d.
num_predecessors
() ==
0
);
a.
precede
(b, b, c, c, d, d);
REQUIRE
(a.
num_successors
() ==
6
);
REQUIRE
(b.
num_predecessors
() ==
2
);
taskflow.
remove_dependency
(a, b);
REQUIRE
(a.
num_successors
() ==
4
);
REQUIRE
(b.
num_predecessors
() ==
0
);
taskflow.
remove_dependency
(a, c);
REQUIRE
(a.
num_successors
() ==
2
);
REQUIRE
(b.
num_predecessors
() ==
0
);
taskflow.
remove_dependency
(a, d);
REQUIRE
(a.
num_successors
() ==
0
);
REQUIRE
(d.
num_predecessors
() ==
0
);
}
//
--------------------------------------------------------
//
Testcase: STDFunction
//
--------------------------------------------------------
TEST_CASE
(
"
STDFunction
"
*
doctest::timeout
(
300
)) {
tf::Taskflow taskflow;
tf::Executor executor;
int
counter =
0
;
std::function<
void
()> func1 = [&] () { ++counter; };
std::function<
int
()> func2 = [&] () { ++counter;
return
0
; };
std::function<
void
()> func3 = [&] () { };
std::function<
void
()> func4 = [&] () { ++counter;};
//
scenario 1
auto
A = taskflow.
emplace
(func1);
auto
B = taskflow.
emplace
(func2);
auto
C = taskflow.
emplace
(func3);
auto
D = taskflow.
emplace
(func4);
A.
precede
(B);
B.
precede
(C, D);
executor.
run
(taskflow).
wait
();
REQUIRE
(counter ==
2
);
//
scenario 2
counter =
0
;
A.
work
(func1);
B.
work
(func2);
C.
work
(func4);
D.
work
(func3);
executor.
run
(taskflow).
wait
();
REQUIRE
(counter ==
3
);
//
scenario 3
taskflow.
clear
();
std::tie
(A, B, C, D) = taskflow.
emplace
(
std::move
(func1),
std::move
(func2),
std::move
(func3),
std::move
(func4)
);
A.
precede
(B);
B.
precede
(C, D);
counter =
0
;
executor.
run
(taskflow).
wait
();
REQUIRE
(counter ==
2
);
}
//
--------------------------------------------------------
//
Testcase: Iterators
//
--------------------------------------------------------
TEST_CASE
(
"
Iterators
"
*
doctest::timeout
(
300
)) {
SUBCASE
(
"
Order
"
) {
tf::Taskflow taskflow;
auto
A = taskflow.
emplace
([](){}).
name
(
"
A
"
);
auto
B = taskflow.
emplace
([](){}).
name
(
"
B
"
);
auto
C = taskflow.
emplace
([](){}).
name
(
"
C
"
);
auto
D = taskflow.
emplace
([](){}).
name
(
"
D
"
);
auto
E = taskflow.
emplace
([](){}).
name
(
"
E
"
);
A.
precede
(B, C, D, E);
E.
succeed
(B, C, D);
A.
for_each_successor
([&, i=
0
] (tf::Task s)
mutable
{
switch
(i++) {
case
0
:
REQUIRE
(s == B);
break
;
case
1
:
REQUIRE
(s == C);
break
;
case
2
:
REQUIRE
(s == D);
break
;
case
3
:
REQUIRE
(s == E);
break
;
default
:
break
;
}
});
E.
for_each_predecessor
([&, i=
0
](tf::Task s)
mutable
{
switch
(i++) {
case
0
:
REQUIRE
(s == A);
break
;
case
1
:
REQUIRE
(s == B);
break
;
case
2
:
REQUIRE
(s == C);
break
;
case
3
:
REQUIRE
(s == D);
break
;
}
});
}
SUBCASE
(
"
Generic
"
) {
tf::Taskflow taskflow;
auto
A = taskflow.
emplace
([](){}).
name
(
"
A
"
);
auto
B = taskflow.
emplace
([](){}).
name
(
"
B
"
);
auto
C = taskflow.
emplace
([](){}).
name
(
"
C
"
);
auto
D = taskflow.
emplace
([](){}).
name
(
"
D
"
);
auto
E = taskflow.
emplace
([](){}).
name
(
"
E
"
);
std::vector<tf::Task> tasks;
taskflow.
for_each_task
([&tasks](tf::Task s){
tasks.
push_back
(s);
});
REQUIRE
(
std::find
(tasks.
begin
(), tasks.
end
(), A) != tasks.
end
());
A.
precede
(B);
A.
for_each_successor
([B](tf::Task s){
REQUIRE
(s==B); });
B.
for_each_predecessor
([A](tf::Task s){
REQUIRE
(s==A); });
A.
precede
(C);
A.
precede
(D);
A.
precede
(E);
C.
precede
(B);
D.
precede
(B);
E.
precede
(B);
int
counter{
0
}, a{
0
}, b{
0
}, c{
0
}, d{
0
}, e{
0
};
A.
for_each_successor
([&](tf::Task s) {
counter++;
if
(s == A) ++a;
if
(s == B) ++b;
if
(s == C) ++c;
if
(s == D) ++d;
if
(s == E) ++e;
});
REQUIRE
(counter == A.
num_successors
());
REQUIRE
(a==
0
);
REQUIRE
(b==
1
);
REQUIRE
(c==
1
);
REQUIRE
(d==
1
);
REQUIRE
(e==
1
);
counter = a = b = c = d = e =
0
;
B.
for_each_predecessor
([&](tf::Task s) {
counter++;
if
(s == A) ++a;
if
(s == B) ++b;
if
(s == C) ++c;
if
(s == D) ++d;
if
(s == E) ++e;
});
REQUIRE
(counter == B.
num_predecessors
());
REQUIRE
(a ==
1
);
REQUIRE
(b ==
0
);
REQUIRE
(c ==
1
);
REQUIRE
(d ==
1
);
REQUIRE
(e ==
1
);
A.
for_each_successor
([](tf::Task s){
s.
name
(
"
A
"
);
});
REQUIRE
(A.
name
() ==
"
A
"
);
REQUIRE
(B.
name
() ==
"
A
"
);
REQUIRE
(C.
name
() ==
"
A
"
);
REQUIRE
(D.
name
() ==
"
A
"
);
REQUIRE
(E.
name
() ==
"
A
"
);
B.
for_each_predecessor
([](tf::Task s){
s.
name
(
"
B
"
);
});
REQUIRE
(A.
name
() ==
"
B
"
);
REQUIRE
(B.
name
() ==
"
A
"
);
REQUIRE
(C.
name
() ==
"
B
"
);
REQUIRE
(D.
name
() ==
"
B
"
);
REQUIRE
(E.
name
() ==
"
B
"
);
}
}
//
--------------------------------------------------------
//
Testcase: Hash
//
--------------------------------------------------------
TEST_CASE
(
"
Hash
"
*
doctest::timeout
(
300
)) {
std::hash<tf::Task> hash;
//
empty hash
tf::Task t1, t2;
REQUIRE
(
hash
(t1) ==
hash
(t2));
tf::Taskflow taskflow;
t1 = taskflow.
emplace
([](){});
REQUIRE
(((
hash
(t1) !=
hash
(t2)) || (
hash
(t1) ==
hash
(t2) && t1 != t2)));
t2 = taskflow.
emplace
([](){});
REQUIRE
(((
hash
(t1) !=
hash
(t2)) || (
hash
(t1) ==
hash
(t2) && t1 != t2)));
t2 = t1;
REQUIRE
(
hash
(t1) ==
hash
(t2));
}
//
--------------------------------------------------------
//
Testcase: SequentialRuns
//
--------------------------------------------------------
void
sequential_runs
(
unsigned
W) {
using
namespace
std
::chrono_literals
;
size_t
num_tasks =
100
;
tf::Executor
executor
(W);
tf::Taskflow taskflow;
std::atomic<
int
> counter {
0
};
std::vector<tf::Task> silent_tasks;
for
(
size_t
i=
0
;i<num_tasks;i++){
silent_tasks.
emplace_back
(
taskflow.
emplace
([&counter]() {counter +=
1
;})
);
}
SUBCASE
(
"
RunOnce
"
){
auto
fu = executor.
run
(taskflow);
REQUIRE
(taskflow.
num_tasks
() == num_tasks);
fu.
get
();
REQUIRE
(counter == num_tasks);
}
SUBCASE
(
"
WaitForAll
"
) {
executor.
run
(taskflow);
executor.
wait_for_all
();
REQUIRE
(counter == num_tasks);
}
SUBCASE
(
"
MultipleRuns
"
) {
std::atomic<
size_t
>
count
(
0
);
tf::Taskflow tf1, tf2, tf3, tf4;
for
(
size_t
n=
0
; n<
16
; ++n) {
tf1.
emplace
([&](){count.
fetch_add
(
1
, std::memory_order_relaxed);});
}
for
(
size_t
n=
0
; n<
1024
; ++n) {
tf2.
emplace
([&](){count.
fetch_add
(
1
, std::memory_order_relaxed);});
}
for
(
size_t
n=
0
; n<
32
; ++n) {
tf3.
emplace
([&](){count.
fetch_add
(
1
, std::memory_order_relaxed);});
}
for
(
size_t
n=
0
; n<
128
; ++n) {
tf4.
emplace
([&](){count.
fetch_add
(
1
, std::memory_order_relaxed);});
}
for
(
int
i=
0
; i<
200
; ++i) {
executor.
run
(tf1);
executor.
run
(tf2);
executor.
run
(tf3);
executor.
run
(tf4);
}
executor.
wait_for_all
();
REQUIRE
(count ==
240000
);
}
}
TEST_CASE
(
"
SerialRuns.1thread
"
*
doctest::timeout
(
300
)) {
sequential_runs
(
1
);
}
TEST_CASE
(
"
SerialRuns.2threads
"
*
doctest::timeout
(
300
)) {
sequential_runs
(
2
);
}
TEST_CASE
(
"
SerialRuns.3threads
"
*
doctest::timeout
(
300
)) {
sequential_runs
(
3
);
}
TEST_CASE
(
"
SerialRuns.4threads
"
*
doctest::timeout
(
300
)) {
sequential_runs
(
4
);
}
TEST_CASE
(
"
SerialRuns.5threads
"
*
doctest::timeout
(
300
)) {
sequential_runs
(
5
);
}
TEST_CASE
(
"
SerialRuns.6threads
"
*
doctest::timeout
(
300
)) {
sequential_runs
(
6
);
}
TEST_CASE
(
"
SerialRuns.7threads
"
*
doctest::timeout
(
300
)) {
sequential_runs
(
7
);
}
TEST_CASE
(
"
SerialRuns.8threads
"
*
doctest::timeout
(
300
)) {
sequential_runs
(
8
);
}
//
--------------------------------------------------------
//
Testcase:: RunAndWait
//
--------------------------------------------------------
TEST_CASE
(
"
RunAndWait.Simple
"
) {
//
create an executor and a taskflow
tf::Executor
executor
(
2
);
tf::Taskflow
taskflow
(
"
Demo
"
);
REQUIRE_THROWS
(executor.
corun
(taskflow));
int
counter{
0
};
//
taskflow to run by the main taskflow
tf::Taskflow others;
tf::Task A = others.
emplace
([&](){ counter++; });
tf::Task B = others.
emplace
([&](){ counter++; });
A.
precede
(B);
//
main taskflow
tf::Task C = taskflow.
emplace
([&](){
executor.
corun
(others);
REQUIRE
(counter ==
2
);
});
tf::Task D = taskflow.
emplace
([&](){
executor.
corun
(others);
REQUIRE
(counter ==
4
);
});
C.
precede
(D);
executor.
run
(taskflow).
wait
();
//
run others again
executor.
run
(others).
wait
();
REQUIRE
(counter ==
6
);
}
TEST_CASE
(
"
RunAndWait.Complex
"
) {
const
size_t
N =
100
;
const
size_t
T =
1000
;
//
create an executor and a taskflow
tf::Executor
executor
(
2
);
tf::Taskflow taskflow;
std::array<tf::Taskflow, N> taskflows;
std::atomic<
size_t
> counter{
0
};
for
(
size_t
n=
0
; n<N; n++) {
for
(
size_t
i=
0
; i<T; i++) {
taskflows[n].
emplace
([&](){ counter++; });
}
taskflow.
emplace
([&executor, &tf=taskflows[n]](){
executor.
corun
(tf);
//
executor.run(tf).wait();
});
}
executor.
run
(taskflow).
wait
();
REQUIRE
(counter == T*N);
}
//
--------------------------------------------------------
//
Testcase: WorkerID
//
--------------------------------------------------------
void
worker_id
(
unsigned
w) {
tf::Taskflow taskflow;
tf::Executor
executor
(w);
for
(
int
i=
0
; i<
1000
; i++) {
auto
A = taskflow.
emplace
([&](){
auto
id = executor.
this_worker_id
();
REQUIRE
(id>=
0
);
REQUIRE
(id< w);
});
auto
B = taskflow.
emplace
([&](tf::Subflow& sf){
auto
id = executor.
this_worker_id
();
REQUIRE
(id>=
0
);
REQUIRE
(id< w);
sf.
emplace
([&](){
auto
sfid = executor.
this_worker_id
();
REQUIRE
(sfid>=
0
);
REQUIRE
(sfid< w);
});
sf.
emplace
([&](tf::Subflow&){
auto
sfid = executor.
this_worker_id
();
REQUIRE
(sfid>=
0
);
REQUIRE
(sfid< w);
});
});
A.
precede
(B);
}
executor.
run_n
(taskflow,
100
).
wait
();
}
TEST_CASE
(
"
WorkerID.1thread
"
) {
worker_id
(
1
);
}
TEST_CASE
(
"
WorkerID.2threads
"
) {
worker_id
(
2
);
}
TEST_CASE
(
"
WorkerID.3threads
"
) {
worker_id
(
3
);
}
TEST_CASE
(
"
WorkerID.4threads
"
) {
worker_id
(
4
);
}
TEST_CASE
(
"
WorkerID.5threads
"
) {
worker_id
(
5
);
}
TEST_CASE
(
"
WorkerID.6threads
"
) {
worker_id
(
6
);
}
TEST_CASE
(
"
WorkerID.7threads
"
) {
worker_id
(
7
);
}
TEST_CASE
(
"
WorkerID.8threads
"
) {
worker_id
(
8
);
}
//
--------------------------------------------------------
//
Testcase: ParallelRuns
//
--------------------------------------------------------
void
parallel_runs
(
unsigned
w) {
std::atomic<
int
> counter;
std::vector<std::thread> threads;
auto
make_taskflow = [&] (tf::Taskflow& tf) {
for
(
int
i=
0
; i<
1024
; i++) {
auto
A = tf.
emplace
([&] () {
counter.
fetch_add
(
1
, std::memory_order_relaxed);
});
auto
B = tf.
emplace
([&] () {
counter.
fetch_add
(
1
, std::memory_order_relaxed);
});
A.
precede
(B);
}
};
SUBCASE
(
"
RunAndWait
"
) {
tf::Executor
executor
(w);
counter =
0
;
for
(
int
t=
0
; t<
32
; t++) {
threads.
emplace_back
([&] () {
tf::Taskflow taskflow;
make_taskflow
(taskflow);
executor.
run
(taskflow).
wait
();
});
}
for
(
auto
& t : threads) {
t.
join
();
}
threads.
clear
();
REQUIRE
(counter.
load
() ==
32
*
1024
*
2
);
}
SUBCASE
(
"
RunAndWaitForAll
"
) {
tf::Executor
executor
(w);
counter =
0
;
std::vector<std::unique_ptr<tf::Taskflow>>
taskflows
(
32
);
std::atomic<
size_t
>
barrier
(
0
);
for
(
int
t=
0
; t<
32
; t++) {
threads.
emplace_back
([&, t=t] () {
taskflows[t] = std::make_unique<tf::Taskflow>();
make_taskflow
(*taskflows[t]);
executor.
run
(*taskflows[t]);
++barrier;
//
make sure all runs are issued
});
}
while
(barrier !=
32
);
executor.
wait_for_all
();
REQUIRE
(counter.
load
() ==
32
*
1024
*
2
);
for
(
auto
& t : threads) {
t.
join
();
}
threads.
clear
();
}
}
TEST_CASE
(
"
ParallelRuns.1thread
"
*
doctest::timeout
(
300
)) {
parallel_runs
(
1
);
}
TEST_CASE
(
"
ParallelRuns.2threads
"
*
doctest::timeout
(
300
)) {
parallel_runs
(
2
);
}
TEST_CASE
(
"
ParallelRuns.3threads
"
*
doctest::timeout
(
300
)) {
parallel_runs
(
3
);
}
TEST_CASE
(
"
ParallelRuns.4threads
"
*
doctest::timeout
(
300
)) {
parallel_runs
(
4
);
}
TEST_CASE
(
"
ParallelRuns.5threads
"
*
doctest::timeout
(
300
)) {
parallel_runs
(
5
);
}
TEST_CASE
(
"
ParallelRuns.6threads
"
*
doctest::timeout
(
300
)) {
parallel_runs
(
6
);
}
TEST_CASE
(
"
ParallelRuns.7threads
"
*
doctest::timeout
(
300
)) {
parallel_runs
(
7
);
}
TEST_CASE
(
"
ParallelRuns.8threads
"
*
doctest::timeout
(
300
)) {
parallel_runs
(
8
);
}
//
--------------------------------------------------------
//
Testcase: NestedRuns
//
--------------------------------------------------------
void
nested_runs
(
unsigned
w) {
int
counter {
0
};
struct
A
{
tf::Executor executor;
tf::Taskflow taskflow;
int
& counter;
A
(
unsigned
w,
int
& c) : executor{w}, counter{c} { }
void
run
()
{
taskflow.
clear
();
auto
A1
= taskflow.
emplace
([&]() { counter++; });
auto
A2
= taskflow.
emplace
([&]() { counter++; });
A1
.
precede
(
A2
);
executor.
run_n
(taskflow,
10
).
wait
();
}
};
struct
B
{
tf::Taskflow taskflow;
tf::Executor executor;
int
& counter;
A a_sim;
B
(
unsigned
w,
int
& c) : executor{w}, counter{c}, a_sim{w, c} { }
void
run
()
{
taskflow.
clear
();
auto
B1
= taskflow.
emplace
([&] () { ++counter; });
auto
B2
= taskflow.
emplace
([&] () { ++counter; a_sim.
run
(); });
B1
.
precede
(
B2
);
executor.
run_n
(taskflow,
100
).
wait
();
}
};
struct
C
{
tf::Taskflow taskflow;
tf::Executor executor;
int
& counter;
B b_sim;
C
(
unsigned
w,
int
& c) : executor{w}, counter{c}, b_sim{w, c} { }
void
run
()
{
taskflow.
clear
();
auto
C1
= taskflow.
emplace
([&] () { ++counter; });
auto
C2
= taskflow.
emplace
([&] () { ++counter; b_sim.
run
(); });
C1
.
precede
(
C2
);
executor.
run_n
(taskflow,
100
).
wait
();
}
};
C
c
(w, counter);
c.
run
();
REQUIRE
(counter ==
220200
);
}
TEST_CASE
(
"
NestedRuns.1thread
"
) {
nested_runs
(
1
);
}
TEST_CASE
(
"
NestedRuns.2threads
"
) {
nested_runs
(
2
);
}
TEST_CASE
(
"
NestedRuns.3threads
"
) {
nested_runs
(
3
);
}
TEST_CASE
(
"
NestedRuns.4threads
"
) {
nested_runs
(
4
);
}
TEST_CASE
(
"
NestedRuns.8threads
"
) {
nested_runs
(
8
);
}
TEST_CASE
(
"
NestedRuns.16threads
"
) {
nested_runs
(
16
);
}
//
--------------------------------------------------------
//
Testcase: Observer
//
--------------------------------------------------------
void
observer
(
unsigned
w) {
tf::Executor
executor
(w);
auto
observer = executor.
make_observer
<tf::ChromeObserver>();
tf::Taskflow taskflowA;
std::vector<tf::Task> tasks;
//
Static tasking
for
(
auto
i=
0
; i <
64
; i ++) {
tasks.
emplace_back
(taskflowA.
emplace
([](){}));
}
//
Randomly specify dependency
for
(
auto
i=
0
; i <
64
; i ++) {
for
(
auto
j=i+
1
; j <
64
; j++) {
if
(
rand
()%
2
==
0
) {
tasks[i].
precede
(tasks[j]);
}
}
}
executor.
run_n
(taskflowA,
16
).
get
();
REQUIRE
(observer->
num_tasks
() ==
64
*
16
);
observer->
clear
();
REQUIRE
(observer->
num_tasks
() ==
0
);
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