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

Browse source 
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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20
Kernel/Task.cpp
View file

@ -885,3 +885,23 @@ Task::Region::Region(LinearAddress a, size_t s, RetainPtr<Zone>&& z, String&& n)
Task::Region::~Region()
{
}
bool Task::isValidAddressForKernel(LinearAddress laddr) const
{
InterruptDisabler disabler;
if (laddr.get() >= ksyms().first().address && laddr.get() <= ksyms().last().address)
return true;
if (is_kmalloc_address((void*)laddr.get()))
return true;
return isValidAddressForUser(laddr);
}
bool Task::isValidAddressForUser(LinearAddress laddr) const
{
InterruptDisabler disabler;
for (auto& region: m_regions) {
if (laddr >= region->linearAddress && laddr < region->linearAddress.offset(region->size))
return true;
}
return false;
}