Block interrupts during malloc

[jdemeyer]

Allow to temporarily suspend interrupts and do this in sage_malloc() and friends (an interrupt during malloc() will mess up the heap, this happens sometimes with a "fixed" #9564!)

Patch chain: #9678, #10061, #10258, #10030, #10018, #9640

Component: c_lib

Keywords: malloc sage_malloc

Author: Jeroen Demeyer

Reviewer: Volker Braun

Merged: sage-4.7.alpha1

Issue created by migration from https://trac.sagemath.org/ticket/10258

[jdemeyer]

Changed keywords from malloc sage_malloc c_lib to malloc sage_malloc

[jdemeyer]

Author: Jeroen Demeyer

[vbraun]

comment:5

Nice!

There are some examples in the documentation that use malloc, for example doc/en/numerical_sage/ctypes_examples.rst. We should convert these to sage_malloc as well, probably in #10109.

[vbraun]

Reviewer: Volker Braun

[jdemeyer]

comment:6

Replying to @vbraun:

Nice!

There are some examples in the documentation that use malloc, for example doc/en/numerical_sage/ctypes_examples.rst. We should convert these to sage_malloc as well, probably in #10109.

You are right that some documentation uses malloc. But that seems to be pure C code. So changing malloc to sage_malloc would imply linking against -Lcsage and possibly adding some sig_on()/sig_off() machinery and possibly more complications...

[jdemeyer]

Attachment: 10258_sage_malloc.patch.gz

[jdemeyer]

comment:7

Rebased patch

[jdemeyer]

Merged: sage-4.7.alpha1