setjmp , longjmp
- by user306936
hi ,
anyways to implement multitasking using setjmp and longjmp
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Search found 11 results on 1 pages for 'longjmp'.
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Multitasking using setjmp, longjmp
- by user306936
Hi, is there a way to implement multitasking using setjmp and longjmpRead the article
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In C: sending func pointers, calling the func with it, playing with EIP, jum_buf and longjmp
- by Yonatan
Hello Internet ! I need to make sure i understand some basic stuff first: 1. how do i pass function A as a parameter to function B? 2. how do i call function A from inside B ? now for the big whammy: I'm trying to do something along the lines of this: jmp_buf buf; buf.__jmpbuf[JB_PC] = functionA; longjmp(buf,10); meaning that i want to use…Read the article
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What is weird about wrapping setjmp and longjmp?
- by Max
Hello. I am using setjmp and longjmp for the first time, and I ran across an issue that comes about when I wrap setjmp and longjmp. I boiled the code down to the following example: #include <stdio.h> #include <setjmp.h> jmp_buf jb; int mywrap_save() { int i = setjmp(jb); return i; } int mywrap_call() { longjmp(jb, 1); …Read the article
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Problem with setjmp/longjmp
- by user294732
The code below is just not working. Can anybody point out why #define STACK_SIZE 1524 static void mt_allocate_stack(struct thread_struct *mythrd) { unsigned int sp = 0; void *stck; stck = (void *)malloc(STACK_SIZE); sp = (unsigned int)&((stck)); sp = sp + STACK_SIZE; while((sp % 8) != 0) sp--; #ifdef…Read the article
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How to properly siglongjmp out of signal handler?
- by EpsilonVector
Suppose I have the following code: In order to implement a context switch I activate ualarm and when it jumps to the handler it setjmp's the current context, and longjmps to the next, expecting to eventually return to the alarm handler and longjmped back into this context (the contexts are cycled through in a Round Robin). For this I…Read the article
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What is the best way to save the environment from before an alarm handler goes off when the alarm do
- by EpsilonVector
I'm trying to implement user threads on a 2.4 Linux kernel (homework) and the trick for context switch seems to be using an alarm that goes off every x milliseconds and sends us to an alarm handler from which we can longjmp to the next thread. What I'm having difficulties with is figuring out how to save the environment to return to…Read the article
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unable to install gems in ruby 1.8.7 2012.12 patchlevel 253 and gem 1.3.7
- by bakyaraj
* longjmp causes uninitialized stack frame *: /usr/bin/ruby terminated ======= Backtrace: ========= /lib/tls/i686/cmov/libc.so.6(__fortify_fail+0x50)[0xc372d0] /lib/tls/i686/cmov/libc.so.6(+0xe223a)[0xc3723a] /usr/bin/ruby[0x80577b9] /usr/bin/ruby[0x80577d5] /usr/bin/ruby(rb_thread_schedule+0x9fc)[0x80652ac]…Read the article
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Fixing a multi-threaded pycurl crash.
- by Rook
If I run pycurl in a single thread everything works great. If I run pycurl in 2 threads python will access violate. The first thing I did was report the problem to pycurl, but the project died about 3 years ago so I'm not holding my breath. My (hackish) solution is to build a 2nd version of pycurl called…Read the article
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GOTO still considered harmful?
- by Kyle Cronin
Everyone is aware of Dijkstra's Letters to the editor: go to statement considered harmful (also here .html transcript and here .pdf) and there has been a formidable push since that time to eschew the goto statement whenever possible. While it's possible to use goto to produce unmaintainable, sprawling code,…Read the article
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Unable to install rubygems in ubuntu 10.04
- by loganathan
I had installed the ruby 1.8.7 with patch level 253 successfully on my ubuntu 10.04, but while installing ruby gems I am facing the below error, can anybody help me on this. ruby -v ruby 1.8.7 (2010-04-19 patchlevel 253) [i686-linux], MBARI 0x8770, Ruby Enterprise Edition 2010.02 gem install mongrel ***…Read the article
