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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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6
Kernel/i386.cpp
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@ -196,10 +196,10 @@ void exception_14_handler()
asm ("movl %%cr2, %%eax":"=a"(faultAddress));
auto& regs = *reinterpret_cast<RegisterDump*>(exception_state_dump);
kprintf("%s page fault: %u(%s), %s laddr=%p\n",
current->isRing0() ? "Kernel" : "User",
current->pid(),
kprintf("Ring%u page fault in %s(%u), %s laddr=%p\n",
regs.cs & 3,
current->name().characters(),
current->pid(),
exception_code & 2 ? "write" : "read",
faultAddress);