public static void __StressTest()
{
int num = 1;
byte **ptrs = stackalloc byte *[StressAllocLimit];
int failures = 0;
int exclusiveFailures = 0;
byte * kstart, kend;
{
void *ks, ke;
EntryModule.GetKernelLocation(out ks, out ke);
kstart = (byte *)ks;
kend = (byte *)ke;
}
Debug.COM1.WriteLine("Memory Management: Stress Test:");
Debug.COM1.Write(" - Allocating ", StressAllocLimit);
Debug.COM1.Write(" buffers");
for (int x = 0; x < StressAllocLimit; ++x)
{
ptrs [x] = (byte *)MemoryManager.Allocate((uint)num);
for (int y = 0; y < num; ++y)
{
ptrs [x][y] = (byte)(num - 1);
}
if (num + 1 >= 256)
{
num = 1;
}
else
{
++num;
}
}
Debug.COM1.WriteLine(" - Checking allocations...");
// Check the allocations for the correct number.
num = 1;
for (int x = 0; x < StressAllocLimit; ++x)
{
byte *alloc = ptrs [x];
int oldFail = exclusiveFailures;
for (int y = 0; y < num; ++y)
{
if (alloc[y] != (byte)(num - 1))
{
++failures;
break;
}
}
if (alloc <= kend)
{
Debug.COM1.Write(" - Allocation #", x);
Debug.COM1.Write(" is not exclusive: ");
Debug.COM1.Write(" overlaps with kernel!");
Debug.COM1.WriteLine();
++exclusiveFailures;
continue;
}
// Test that the entry is also mutually exclusive from the others.
for (int y = 0; y < StressAllocLimit; ++y)
{
byte *xa, ya;
bool fail = false;
if (x == y)
{
continue;
}
xa = alloc;
ya = ptrs [y];
if (ya > xa && ya < xa + num)
{
Debug.COM1.Write(" - Allocation #", x);
Debug.COM1.Write(" is not exclusive: ");
Debug.COM1.Write("Overlap with alloc #", y);
Debug.COM1.WriteLine();
fail = true;
}
else if (xa == ya)
{
Debug.COM1.Write(" - Allocation #", x);
Debug.COM1.Write(" is not exclusive: ");
Debug.COM1.Write("Same as alloc #", y);
Debug.COM1.WriteLine();
fail = true;
}
/*
* if (ya > xa && ya <= xa + ExclusivityTestBlockSize)
* fail = true;
* else if (xa > ya && xa <= ya + ExclusivityTestBlockSize)
* fail = true;
* else if (xa == ya)
* fail = true;
* else if (xa <= kend)
* fail = true;
*/
if (fail)
{
exclusiveFailures++;
break;
}
}
if (oldFail == exclusiveFailures)
{
Debug.COM1.Write(" - Allocation #", x);
Debug.COM1.WriteLine(" is correct");
}
if (num + 1 >= 256)
{
num = 1;
}
else
{
++num;
}
}
Debug.COM1.Write(" - Failures: ", failures * 100 / StressAllocLimit);
Debug.COM1.WriteLine("%");
Debug.COM1.Write(" - Exclusivity Failures: ",
exclusiveFailures * 100 / StressAllocLimit);
Debug.COM1.WriteLine("%");
// Deallocate
for (int x = 0; x < StressAllocLimit; ++x)
{
MemoryManager.Free(ptrs [x]);
}
}
public static void __ExclusivityTest()
{
byte **ptrs = stackalloc byte *[ExclusivityTestLimit];
int exclusiveFailures = 0;
byte * kstart, kend;
{
void *ks, ke;
EntryModule.GetKernelLocation(out ks, out ke);
kstart = (byte *)ks;
kend = (byte *)ke;
}
Debug.COM1.WriteLine("Memory Management: Exclusivity Test:");
// Make our allocations
for (int x = 0; x < ExclusivityTestLimit; ++x)
{
ptrs [x] = (byte *)MemoryManager.Allocate(ExclusivityTestBlockSize);
}
// Test that each entry is mutually exclusive
for (int x = 0; x < ExclusivityTestLimit; ++x)
{
bool fail = false;
if (ptrs [x] <= kend)
{
Debug.COM1.Write("Allocation #", x);
Debug.COM1.Write(" is not exclusive: ");
Debug.COM1.Write(" overlaps with kernel!");
fail = true;
}
for (int y = 0; !fail && y < ExclusivityTestLimit; ++y)
{
byte *xa, ya;
if (x == y)
{
continue;
}
xa = ptrs [x];
ya = ptrs [y];
if (ya > xa && ya <= xa + ExclusivityTestBlockSize)
{
Debug.COM1.Write(" - Allocation #", x);
Debug.COM1.Write(" is not exclusive: ");
Debug.COM1.Write("Overlap with alloc #", y);
fail = true;
}
else if (xa > ya && xa <= ya + ExclusivityTestBlockSize)
{
Debug.COM1.Write(" - (inv) Allocation #", x);
Debug.COM1.Write(" is not exclusive: ");
Debug.COM1.Write("Overlap with alloc #", y);
fail = true;
}
else if (xa == ya)
{
Debug.COM1.Write("Allocation #", x);
Debug.COM1.Write(" is not exclusive: ");
Debug.COM1.Write("Same as alloc #", y);
fail = true;
}
/*
* if (xa > ya && xa + ExclusivityTestBlockSize < ya)
* fail = true;
* else if (ya > xa && ya + ExclusivityTestBlockSize < xa)
* fail = true;
* else if (xa == ya)
* fail = true;
*/
}
if (fail)
{
exclusiveFailures++;
}
}
Debug.COM1.Write(" - Failures: ", exclusiveFailures * 100 / ExclusivityTestLimit);
Debug.COM1.WriteLine("%");
// Deallocate
for (int x = 0; x < ExclusivityTestLimit; ++x)
{
MemoryManager.Free(ptrs [x]);
}
}