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Greatly improve /proc/PID/stack by tracing the ebp frame chain.

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I also added a generator cache to FileHandle. This way, multiple
reads to a generated file (i.e in a synthfs) can transparently
handle multiple calls to read() without the contents changing
between calls.

The cache is discarded at EOF (or when the FileHandle is destroyed.)
This commit is contained in:
Andreas Kling
2018-10-27 00:14:24 +02:00
parent c928b06218
commit 2716a9e2d7
22 changed files with 210 additions and 116 deletions
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4
VirtualFileSystem/FileSystem.cpp
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@@ -50,7 +50,7 @@ InodeIdentifier FileSystem::childOfDirectoryInodeWithName(InodeIdentifier inode,
return foundInode;
}
ByteBuffer FileSystem::readEntireInode(InodeIdentifier inode) const
ByteBuffer FileSystem::readEntireInode(InodeIdentifier inode, FileHandle* handle) const
{
ASSERT(inode.fileSystemID() == id());
@@ -67,7 +67,7 @@ ByteBuffer FileSystem::readEntireInode(InodeIdentifier inode) const
byte* out = contents.pointer();
Unix::off_t offset = 0;
for (;;) {
nread = readInodeBytes(inode, offset, sizeof(buffer), buffer);
nread = readInodeBytes(inode, offset, sizeof(buffer), buffer, handle);
if (nread <= 0)
break;
memcpy(out, buffer, nread);