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Many Microsoft employees have contributed to the Windows Subsystem for Linux, this commit is the result of their work since 2016. The entire history of the Windows Subsystem for Linux can't be shared here, but here's an overview of WSL's history after it moved to it own repository in 2021: Number of commits on the main branch: 2930 Number of contributors: 31 Head over https://github.com/microsoft/WSL/releases for a more detailed history of the features added to WSL since 2021.
127 lines
No EOL
2.5 KiB
C
127 lines
No EOL
2.5 KiB
C
/*++
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Copyright (c) Microsoft. All rights reserved.
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Module Name:
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brk.c
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Abstract:
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This file is the brk test.
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--*/
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#include "lxtcommon.h"
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#include "unittests.h"
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#include <unistd.h>
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#include <stdio.h>
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#define LXT_NAME "brk"
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int BrkTest(PLXT_ARGS Args);
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//
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// Global constants
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//
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static const LXT_VARIATION g_LxtVariations[] = {
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{"Brk Test", BrkTest},
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};
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int BrkTestEntry(int Argc, char* Argv[])
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/*++
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--*/
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{
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LXT_ARGS Args;
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int Result;
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LxtCheckResult(LxtInitialize(Argc, Argv, &Args, LXT_NAME));
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LxtCheckResult(LxtRunVariations(&Args, g_LxtVariations, LXT_COUNT_OF(g_LxtVariations)));
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ErrorExit:
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LxtUninitialize();
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return !LXT_SUCCESS(Result);
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}
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int BrkTest(PLXT_ARGS Args)
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/*++
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--*/
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{
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int Result;
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int Status;
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char* BreakAddress;
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char* NewBreakAddress;
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int PageSize;
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//
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// Get current brk address.
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//
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LxtLogInfo("Getting current break address");
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BreakAddress = (char*)sbrk(0);
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LxtLogInfo("Current break address is 0x%p", BreakAddress);
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//
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// Increase the brk address.
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//
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PageSize = 4096;
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BreakAddress += PageSize;
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Status = brk(BreakAddress);
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if (Status != 0)
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{
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LxtLogError("Brk call to increase the address failed");
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Result = LXT_RESULT_FAILURE;
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goto ErrorExit;
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}
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NewBreakAddress = (char*)sbrk(0);
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LxtLogInfo("New break address 0x%p", NewBreakAddress);
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if ((NewBreakAddress < BreakAddress) || (NewBreakAddress > (BreakAddress + PageSize)))
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{
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LxtLogError(
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"The returned brk address does not match the expected \
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break address");
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Result = LXT_RESULT_FAILURE;
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goto ErrorExit;
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}
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LxtLogInfo("New Break address set!");
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//
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// Decrease the break address.
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//
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BreakAddress = (NewBreakAddress - PageSize);
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LxtLogInfo("Decreasing the break address by a page");
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Status = brk(BreakAddress);
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if (Status != 0)
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{
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LxtLogError("Brk call to decrease the address failed");
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Result = LXT_RESULT_FAILURE;
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goto ErrorExit;
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}
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NewBreakAddress = (char*)sbrk(0);
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if (NewBreakAddress != BreakAddress)
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{
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LxtLogError(
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"The returned brk address after decreasing did not match\
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the expected break address");
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Result = LXT_RESULT_FAILURE;
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goto ErrorExit;
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}
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Result = LXT_RESULT_SUCCESS;
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ErrorExit:
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return Result;
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} |