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Re: ptrace PT_CONTINUE

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Re: ptrace PT_CONTINUE

Subject: Re: ptrace PT_CONTINUE
From: Esteban Bodigami <email@hidden>
Date: Fri, 10 Jul 2009 14:32:22 -0600

thanks, ptrace is new to me. I just downloaded the current source of XNU for translation to Spanish.

Terry Lambert <email@hidden>

On Jul 9, 2009, at 8:48 PM, Esteban Bodigami wrote:

what is the difference between ptrace and dtrace?

ptrace is a system call with a limited set of functionality for use by debuggers of user space processes. On BSD-based systems, it's all that's needed to implement a debugger. On Mac OS X, you also need the task port for the process being debugged, in order to access its address space contents.

dtrace is a command-line command that front-ends the DTrace facility. The DTrace facility is a comprehensive dynamic tracing framework capable of instrumenting existing code without specific explicit instrumentation, including both user programs and the operating system itself.

More extensive information on DTrace is available from Sun's web site.

-- Terry

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References:
	>ptrace PT_CONTINUE (From: Aron-Zvi <email@hidden>)
	>Re: ptrace PT_CONTINUE (From: Thierry bultel <email@hidden>)
	>Re: ptrace PT_CONTINUE (From: Terry Lambert <email@hidden>)
	>Re: ptrace PT_CONTINUE (From: Esteban Bodigami <email@hidden>)
	>Re: ptrace PT_CONTINUE (From: Terry Lambert <email@hidden>)

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