Doing it the other way around leads to race conditions, since an unlucky interrupt arriving just after the mprotect call (but before the the_env->disable_interrupts = 0 write) will write protect the environment again, leading to a segfault. This is no problem if SIGSEGV is unblocked (in which case we will just enter sigsegv_handler again and arrive at the same point). However if SIGSEGV is blocked (and another segfault arises) the whole process will die. |
||
|---|---|---|
| contrib | ||
| examples | ||
| msvc | ||
| src | ||
| .gitignore | ||
| .gitlab-ci.yml | ||
| appveyor.yml | ||
| CHANGELOG | ||
| configure | ||
| COPYING | ||
| INSTALL | ||
| LICENSE | ||
| Makefile.in | ||
| README.md | ||
ECL stands for Embeddable Common-Lisp. The ECL project aims to produce an implementation of the Common-Lisp language which complies to the ANSI X3J13 definition of the language.
The term embeddable refers to the fact that ECL includes a Lisp to C compiler, which produces libraries (static or dynamic) that can be called from C programs. Furthermore, ECL can produce standalone executables from Lisp code and can itself be linked to your programs as a shared library. It also features an interpreter for situations when a C compiler isn't available.
ECL supports the operating systems Linux, FreeBSD, NetBSD, DragonFly BSD, OpenBSD, Solaris (at least v. 9), Microsoft Windows (MSVC, MinGW and Cygwin) and OSX, running on top of the Intel, Sparc, Alpha, ARM and PowerPC processors. Porting to other architectures should be rather easy.