mirror of https://github.com/0intro/libtask
recent changes
This commit is contained in:
Russ Cox
parent
42f058999e
commit
b75fdf3424
3
Makefile
3
Makefile
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@ -48,9 +48,6 @@ testdelay1: testdelay1.o $(LIB)
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clean:
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rm -f *.o primes tcpproxy testdelay testdelay1 httpload $(LIB)
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tgz:
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tar czvf libtask.tgz COPYRIGHT README *.[chS] Makefile makesun
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install: $(LIB)
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cp $(LIB) /usr/local/lib
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cp task.h /usr/local/include
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@ -0,0 +1,57 @@
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LIB=libtask.a
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OFILES=\
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channel.o\
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context.o\
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fd.o\
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net.o\
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print.o\
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qlock.o\
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rendez.o\
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task.o\
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all: $(LIB) primes tcpproxy testdelay
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$(OFILES): taskimpl.h task.h 386-ucontext.h power-ucontext.h
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AS=as
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CC=cc
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CFLAGS=-c -I. -g
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%.o: %.S
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$(AS) $*.S
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%.o: %.c
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$(CC) $(CFLAGS) $*.c
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$(LIB): $(OFILES)
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ar rvc $(LIB) $(OFILES)
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primes: primes.o $(LIB)
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$(CC) -o primes primes.o $(LIB)
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tcpproxy: tcpproxy.o $(LIB)
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$(CC) -o tcpproxy tcpproxy.o $(LIB)
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httpload: httpload.o $(LIB)
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$(CC) -o httpload httpload.o $(LIB)
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stdlogger: stdlogger.o $(LIB)
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$(CC) -o stdlogger stdlogger.o $(LIB)
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testdelay: testdelay.o $(LIB)
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$(CC) -o testdelay testdelay.o $(LIB)
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clock: clock.o $(LIB)
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$(CC) -o clock clock.o $(LIB)
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clean:
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rm *.o tcpproxy primes $(LIB)
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tgz:
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tar czvf libtask.tgz COPYRIGHT README *.[chS] Makefile
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install: $(LIB)
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cp $(LIB) /usr/local/lib
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cp task.h /usr/local/include
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6
README
6
README
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@ -1,6 +1,6 @@
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Libtask is a simple coroutine library. It runs on Linux (ARM and x86),
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FreeBSD (x86), OS X (PowerPC and x86), and SunOS Solaris (Sparc), and is
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easy to port to other systems.
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Libtask is a simple coroutine library. It runs on Linux (ARM, MIPS, and x86),
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FreeBSD (x86), OS X (PowerPC x86, and x86-64), and SunOS Solaris (Sparc),
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and is easy to port to other systems.
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Libtask gives the programmer the illusion of threads, but
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the operating system sees only a single kernel thread.
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@ -0,0 +1,137 @@
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#define setcontext(u) setmcontext(&(u)->uc_mcontext)
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#define getcontext(u) getmcontext(&(u)->uc_mcontext)
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typedef struct mcontext mcontext_t;
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typedef struct ucontext ucontext_t;
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extern int swapcontext(ucontext_t*, const ucontext_t*);
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extern void makecontext(ucontext_t*, void(*)(), int, ...);
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extern int getmcontext(mcontext_t*);
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extern void setmcontext(const mcontext_t*);
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/*-
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* Copyright (c) 1999 Marcel Moolenaar
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD: src/sys/sys/ucontext.h,v 1.4 1999/10/11 20:33:17 luoqi Exp $
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*/
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/* #include <machine/ucontext.h> */
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/*-
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* Copyright (c) 1999 Marcel Moolenaar
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer
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||||
* in this position and unchanged.
|
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* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD: src/sys/i386/include/ucontext.h,v 1.4 1999/10/11 20:33:09 luoqi Exp $
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*/
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struct mcontext {
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/*
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* The first 20 fields must match the definition of
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* sigcontext. So that we can support sigcontext
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* and ucontext_t at the same time.
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*/
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long mc_onstack; /* XXX - sigcontext compat. */
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long mc_rdi; /* machine state (struct trapframe) */
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long mc_rsi;
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long mc_rdx;
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long mc_rcx;
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long mc_r8;
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long mc_r9;
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long mc_rax;
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long mc_rbx;
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long mc_rbp;
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long mc_r10;
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long mc_r11;
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long mc_r12;
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long mc_r13;
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long mc_r14;
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long mc_r15;
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long mc_trapno;
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long mc_addr;
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long mc_flags;
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long mc_err;
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long mc_rip;
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long mc_cs;
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long mc_rflags;
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long mc_rsp;
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long mc_ss;
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long mc_len; /* sizeof(mcontext_t) */
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#define _MC_FPFMT_NODEV 0x10000 /* device not present or configured */
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#define _MC_FPFMT_XMM 0x10002
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long mc_fpformat;
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#define _MC_FPOWNED_NONE 0x20000 /* FP state not used */
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#define _MC_FPOWNED_FPU 0x20001 /* FP state came from FPU */
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#define _MC_FPOWNED_PCB 0x20002 /* FP state came from PCB */
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long mc_ownedfp;
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/*
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* See <machine/fpu.h> for the internals of mc_fpstate[].
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*/
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long mc_fpstate[64];
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long mc_spare[8];
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};
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struct ucontext {
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/*
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* Keep the order of the first two fields. Also,
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* keep them the first two fields in the structure.
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* This way we can have a union with struct
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* sigcontext and ucontext_t. This allows us to
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* support them both at the same time.
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* note: the union is not defined, though.
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*/
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sigset_t uc_sigmask;
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mcontext_t uc_mcontext;
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struct __ucontext *uc_link;
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stack_t uc_stack;
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int __spare__[8];
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};
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128
asm.S
128
asm.S
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@ -12,17 +12,21 @@
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#define GET getmcontext
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#endif
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#if defined(__APPLE__) && defined(__i386__)
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#if defined(__APPLE__)
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#if defined(__i386__)
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#define NEEDX86CONTEXT 1
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#define SET _setmcontext
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#define GET _getmcontext
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#endif
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#if defined(__APPLE__) && !defined(__i386__)
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#elif defined(__x86_64__)
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#define NEEDAMD64CONTEXT 1
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#define SET _setmcontext
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#define GET _getmcontext
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#else
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#define NEEDPOWERCONTEXT 1
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#define SET __setmcontext
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#define GET __getmcontext
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#endif
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#endif
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#if defined(__linux__) && defined(__arm__)
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#define NEEDARMCONTEXT 1
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@ -30,6 +34,12 @@
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#define GET getmcontext
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#endif
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#if defined(__linux__) && defined(__mips__)
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#define NEEDMIPSCONTEXT 1
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#define SET setmcontext
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#define GET getmcontext
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#endif
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#ifdef NEEDX86CONTEXT
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.globl SET
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SET:
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@ -77,6 +87,56 @@ GET:
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ret
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#endif
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#ifdef NEEDAMD64CONTEXT
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.globl SET
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SET:
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movq 16(%rdi), %rsi
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movq 24(%rdi), %rdx
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movq 32(%rdi), %rcx
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movq 40(%rdi), %r8
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movq 48(%rdi), %r9
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movq 56(%rdi), %rax
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movq 64(%rdi), %rbx
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movq 72(%rdi), %rbp
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movq 80(%rdi), %r10
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movq 88(%rdi), %r11
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movq 96(%rdi), %r12
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movq 104(%rdi), %r13
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movq 112(%rdi), %r14
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movq 120(%rdi), %r15
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movq 184(%rdi), %rsp
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pushq 160(%rdi) /* new %eip */
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movq 8(%rdi), %rdi
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ret
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.globl GET
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GET:
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movq %rdi, 8(%rdi)
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movq %rsi, 16(%rdi)
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movq %rdx, 24(%rdi)
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movq %rcx, 32(%rdi)
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movq %r8, 40(%rdi)
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movq %r9, 48(%rdi)
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movq $1, 56(%rdi) /* %rax */
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movq %rbx, 64(%rdi)
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movq %rbp, 72(%rdi)
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movq %r10, 80(%rdi)
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movq %r11, 88(%rdi)
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movq %r12, 96(%rdi)
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movq %r13, 104(%rdi)
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movq %r14, 112(%rdi)
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movq %r15, 120(%rdi)
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movq (%rsp), %rcx /* %rip */
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movq %rcx, 160(%rdi)
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leaq 8(%rsp), %rcx /* %rsp */
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movq %rcx, 184(%rdi)
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movq 32(%rdi), %rcx /* restore %rcx */
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movq $0, %rax
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ret
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#endif
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#ifdef NEEDPOWERCONTEXT
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/* get FPR and VR use flags with sc 0x7FF3 */
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/* get vsave with mfspr reg, 256 */
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@ -204,3 +264,63 @@ SET:
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ldr r0, [r0]
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mov pc, lr
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#endif
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#ifdef NEEDMIPSCONTEXT
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.globl GET
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GET:
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sw $4, 24($4)
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sw $5, 28($4)
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sw $6, 32($4)
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sw $7, 36($4)
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sw $16, 72($4)
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sw $17, 76($4)
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sw $18, 80($4)
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sw $19, 84($4)
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sw $20, 88($4)
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sw $21, 92($4)
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sw $22, 96($4)
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sw $23, 100($4)
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sw $28, 120($4) /* gp */
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sw $29, 124($4) /* sp */
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sw $30, 128($4) /* fp */
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sw $31, 132($4) /* ra */
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xor $2, $2, $2
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j $31
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nop
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.globl SET
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SET:
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lw $16, 72($4)
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lw $17, 76($4)
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lw $18, 80($4)
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lw $19, 84($4)
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lw $20, 88($4)
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lw $21, 92($4)
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lw $22, 96($4)
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lw $23, 100($4)
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lw $28, 120($4) /* gp */
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lw $29, 124($4) /* sp */
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lw $30, 128($4) /* fp */
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/*
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* If we set $31 directly and j $31,
|
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* we would loose the outer return address.
|
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* Use a temporary register, then.
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*/
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lw $8, 132($4) /* ra */
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||||
/* bug: not setting the pc causes a bus error */
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lw $25, 132($4) /* pc */
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||||
|
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lw $5, 28($4)
|
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lw $6, 32($4)
|
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lw $7, 36($4)
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lw $4, 24($4)
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j $8
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nop
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#endif
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|
|
|
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56
context.c
56
context.c
|
|
@ -2,15 +2,18 @@
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|
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#include "taskimpl.h"
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|
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#if defined(__APPLE__) && defined(__i386__)
|
||||
#if defined(__APPLE__)
|
||||
#if defined(__i386__)
|
||||
#define NEEDX86MAKECONTEXT
|
||||
#define NEEDSWAPCONTEXT
|
||||
#endif
|
||||
|
||||
#if defined(__APPLE__) && !defined(__i386__)
|
||||
#elif defined(__x86_64__)
|
||||
#define NEEDAMD64MAKECONTEXT
|
||||
#define NEEDSWAPCONTEXT
|
||||
#else
|
||||
#define NEEDPOWERMAKECONTEXT
|
||||
#define NEEDSWAPCONTEXT
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#if defined(__FreeBSD__) && defined(__i386__) && __FreeBSD__ < 5
|
||||
#define NEEDX86MAKECONTEXT
|
||||
|
|
@ -27,6 +30,11 @@
|
|||
#define NEEDARMMAKECONTEXT
|
||||
#endif
|
||||
|
||||
#if defined(__linux__) && defined(__mips__)
|
||||
#define NEEDSWAPCONTEXT
|
||||
#define NEEDMIPSMAKECONTEXT
|
||||
#endif
|
||||
|
||||
#ifdef NEEDPOWERMAKECONTEXT
|
||||
void
|
||||
makecontext(ucontext_t *ucp, void (*func)(void), int argc, ...)
|
||||
|
|
@ -61,6 +69,29 @@ makecontext(ucontext_t *ucp, void (*func)(void), int argc, ...)
|
|||
}
|
||||
#endif
|
||||
|
||||
#ifdef NEEDAMD64MAKECONTEXT
|
||||
void
|
||||
makecontext(ucontext_t *ucp, void (*func)(void), int argc, ...)
|
||||
{
|
||||
long *sp;
|
||||
va_list va;
|
||||
|
||||
memset(&ucp->uc_mcontext, 0, sizeof ucp->uc_mcontext);
|
||||
if(argc != 2)
|
||||
*(int*)0 = 0;
|
||||
va_start(va, argc);
|
||||
ucp->uc_mcontext.mc_rdi = va_arg(va, int);
|
||||
ucp->uc_mcontext.mc_rsi = va_arg(va, int);
|
||||
va_end(va);
|
||||
sp = (long*)ucp->uc_stack.ss_sp+ucp->uc_stack.ss_size/sizeof(long);
|
||||
sp -= argc;
|
||||
sp = (void*)((uintptr_t)sp - (uintptr_t)sp%16); /* 16-align for OS X */
|
||||
*--sp = 0; /* return address */
|
||||
ucp->uc_mcontext.mc_rip = (long)func;
|
||||
ucp->uc_mcontext.mc_rsp = (long)sp;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef NEEDARMMAKECONTEXT
|
||||
void
|
||||
makecontext(ucontext_t *uc, void (*fn)(void), int argc, ...)
|
||||
|
|
@ -78,6 +109,23 @@ makecontext(ucontext_t *uc, void (*fn)(void), int argc, ...)
|
|||
}
|
||||
#endif
|
||||
|
||||
#ifdef NEEDMIPSMAKECONTEXT
|
||||
void
|
||||
makecontext(ucontext_t *uc, void (*fn)(void), int argc, ...)
|
||||
{
|
||||
int i, *sp;
|
||||
va_list arg;
|
||||
|
||||
va_start(arg, argc);
|
||||
sp = (int*)uc->uc_stack.ss_sp+uc->uc_stack.ss_size/4;
|
||||
for(i=0; i<4 && i<argc; i++)
|
||||
uc->uc_mcontext.mc_regs[i+4] = va_arg(arg, int);
|
||||
va_end(arg);
|
||||
uc->uc_mcontext.mc_regs[29] = (int)sp;
|
||||
uc->uc_mcontext.mc_regs[31] = (int)fn;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef NEEDSWAPCONTEXT
|
||||
int
|
||||
swapcontext(ucontext_t *oucp, const ucontext_t *ucp)
|
||||
|
|
|
|||
|
|
@ -0,0 +1,77 @@
|
|||
typedef struct mcontext mcontext_t;
|
||||
typedef struct ucontext ucontext_t;
|
||||
|
||||
extern int swapcontext(ucontext_t*, const ucontext_t*);
|
||||
extern void makecontext(ucontext_t*, void(*)(), int, ...);
|
||||
|
||||
/*
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This code is derived from software contributed to Berkeley by
|
||||
* Ralph Campbell.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* @(#)ucontext.h 8.1 (Berkeley) 6/10/93
|
||||
* JNPR: ucontext.h,v 1.2 2007/08/09 11:23:32 katta
|
||||
* $FreeBSD: src/sys/mips/include/ucontext.h,v 1.2 2010/01/10 19:50:24 imp Exp $
|
||||
*/
|
||||
|
||||
struct mcontext {
|
||||
/*
|
||||
* These fields must match the corresponding fields in struct
|
||||
* sigcontext which follow 'sc_mask'. That way we can support
|
||||
* struct sigcontext and ucontext_t at the same time.
|
||||
*/
|
||||
int mc_onstack; /* sigstack state to restore */
|
||||
int mc_pc; /* pc at time of signal */
|
||||
int mc_regs[32]; /* processor regs 0 to 31 */
|
||||
int sr; /* status register */
|
||||
int mullo, mulhi; /* mullo and mulhi registers... */
|
||||
int mc_fpused; /* fp has been used */
|
||||
int mc_fpregs[33]; /* fp regs 0 to 31 and csr */
|
||||
int mc_fpc_eir; /* fp exception instruction reg */
|
||||
void *mc_tls; /* pointer to TLS area */
|
||||
int __spare__[8]; /* XXX reserved */
|
||||
};
|
||||
|
||||
struct ucontext {
|
||||
/*
|
||||
* Keep the order of the first two fields. Also,
|
||||
* keep them the first two fields in the structure.
|
||||
* This way we can have a union with struct
|
||||
* sigcontext and ucontext_t. This allows us to
|
||||
* support them both at the same time.
|
||||
* note: the union is not defined, though.
|
||||
*/
|
||||
sigset_t uc_sigmask;
|
||||
mcontext_t uc_mcontext;
|
||||
|
||||
struct __ucontext *uc_link;
|
||||
stack_t uc_stack;
|
||||
int uc_flags;
|
||||
int __spare__[4];
|
||||
};
|
||||
1
task.c
1
task.c
|
|
@ -123,6 +123,7 @@ taskalloc(void (*fn)(void*), void *arg, uint stack)
|
|||
* function that takes some number of word-sized variables,
|
||||
* and on 64-bit machines pointers are bigger than words.
|
||||
*/
|
||||
//print("make %p\n", t);
|
||||
z = (ulong)t;
|
||||
y = z;
|
||||
z >>= 16; /* hide undefined 32-bit shift from 32-bit compilers */
|
||||
|
|
|
|||
12
taskimpl.h
12
taskimpl.h
|
|
@ -11,7 +11,7 @@
|
|||
|
||||
#define USE_UCONTEXT 1
|
||||
|
||||
#if defined(__OpenBSD__)
|
||||
#if defined(__OpenBSD__) || defined(__mips__)
|
||||
#undef USE_UCONTEXT
|
||||
#define USE_UCONTEXT 0
|
||||
#endif
|
||||
|
|
@ -95,6 +95,8 @@ extern void makecontext(ucontext_t*, void(*)(), int, ...);
|
|||
# define ucontext_t libthread_ucontext_t
|
||||
# if defined(__i386__)
|
||||
# include "386-ucontext.h"
|
||||
# elif defined(__x86_64__)
|
||||
# include "amd64-ucontext.h"
|
||||
# else
|
||||
# include "power-ucontext.h"
|
||||
# endif
|
||||
|
|
@ -128,6 +130,14 @@ void setmcontext(const mcontext_t*);
|
|||
#define getcontext(u) getmcontext(&(u)->uc_mcontext)
|
||||
#endif
|
||||
|
||||
#if defined(__mips__)
|
||||
#include "mips-ucontext.h"
|
||||
int getmcontext(mcontext_t*);
|
||||
void setmcontext(const mcontext_t*);
|
||||
#define setcontext(u) setmcontext(&(u)->uc_mcontext)
|
||||
#define getcontext(u) getmcontext(&(u)->uc_mcontext)
|
||||
#endif
|
||||
|
||||
typedef struct Context Context;
|
||||
|
||||
enum
|
||||
|
|
|
|||
Loading…
Reference in New Issue