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Make smallbuddy handle larger requests correctly (#556)

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* Fail more abruptly if the bounds are not exact.

* Move bounding from Pool into Backend.

This commit makes the rounding and the bounding occur in the same
function.

* Enable smallbuddyrange to handle larger requests

The smallbuddy can now pass the larger requests up the range chain if
it cannot satisfy it itself.

* Test larger requests for meta-data.
This commit is contained in:
Matthew Parkinson
2022-09-14 12:12:06 +01:00
committed by GitHub
parent 0ea12d9725
commit 11c18082d6
6 changed files with 70 additions and 20 deletions
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39
src/test/func/pool/pool.cc
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@@ -1,3 +1,5 @@
#include <array>
#include <iostream>
#include <snmalloc/snmalloc.h>
#include <test/opt.h>
#include <test/setup.h>
@@ -24,6 +26,23 @@ struct PoolBEntry : Pooled<PoolBEntry>
using PoolB = Pool<PoolBEntry, Alloc::Config>;
struct PoolLargeEntry : Pooled<PoolLargeEntry>
{
std::array<int, 2'000'000> payload;
PoolLargeEntry()
{
printf(".");
fflush(stdout);
payload[0] = 1;
printf("first %d\n", payload[0]);
payload[1'999'999] = 1;
printf("last %d\n", payload[1'999'999]);
};
};
using PoolLarge = Pool<PoolLargeEntry, Alloc::Config>;
void test_alloc()
{
auto ptr = PoolA::acquire();
@@ -116,6 +135,18 @@ void test_iterator()
PoolA::release(after_iteration_ptr);
}
void test_large()
{
printf(".");
fflush(stdout);
PoolLargeEntry* p = PoolLarge::acquire();
printf(".");
fflush(stdout);
PoolLarge::release(p);
printf(".");
fflush(stdout);
}
int main(int argc, char** argv)
{
setup();
@@ -128,10 +159,18 @@ int main(int argc, char** argv)
#endif
test_alloc();
std::cout << "test_alloc passed" << std::endl;
test_constructor();
std::cout << "test_constructor passed" << std::endl;
test_alloc_many();
std::cout << "test_alloc_many passed" << std::endl;
test_double_alloc();
std::cout << "test_double_alloc passed" << std::endl;
test_different_alloc();
std::cout << "test_different_alloc passed" << std::endl;
test_iterator();
std::cout << "test_iterator passed" << std::endl;
test_large();
std::cout << "test_large passed" << std::endl;
return 0;
}