From e4e54c2ec744e884f6f55c135bea78e815d28d6c Mon Sep 17 00:00:00 2001 From: Timo Teras Date: Thu, 19 Nov 2009 14:32:11 +0200 Subject: libtf: initial commit libtf is to be user-space cooperative threading library similar to State Threads (http://state-threads.sourceforge.net/), but with additional support for multiple cores, using better algorithms and taking advantage of new Linux kernel syscalls such as eventfd, signalfd and epoll (edge-triggered mode). Initial implementation has setjmp based user-space context switching and trivial testcase. Works on Linux/x86. TFbuild uses ideas from different build systems, namely Kbuild, but it's inner workings are quite different. All build files are included (using macro trickery) instead of recursive making. Thus the build dependency graph is complete and should yield good make performance. Also parallel stuff should work. --- include/libtf/atomic.h | 19 +++++ include/libtf/defines.h | 67 +++++++++++++++++ include/libtf/fiber.h | 52 +++++++++++++ include/libtf/list.h | 194 ++++++++++++++++++++++++++++++++++++++++++++++++ include/libtf/tf.h | 20 +++++ 5 files changed, 352 insertions(+) create mode 100644 include/libtf/atomic.h create mode 100644 include/libtf/defines.h create mode 100644 include/libtf/fiber.h create mode 100644 include/libtf/list.h create mode 100644 include/libtf/tf.h (limited to 'include') diff --git a/include/libtf/atomic.h b/include/libtf/atomic.h new file mode 100644 index 0000000..ec9f1e0 --- /dev/null +++ b/include/libtf/atomic.h @@ -0,0 +1,19 @@ +/* atomic.h - wrapper for atomic gcc built-ins + * + * Copyright (C) 2009 Timo Teräs + * All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 or later as + * published by the Free Software Foundation. + * + * See http://www.gnu.org/ for details. + */ + +#ifndef TF_ATOMIC_H +#define TF_ATOMIC_H + +#define tf_atomic_inc(var) __sync_add_and_fetch(&(var), 1) +#define tf_atomic_dec(var) __sync_add_and_fetch(&(var), -1) + +#endif diff --git a/include/libtf/defines.h b/include/libtf/defines.h new file mode 100644 index 0000000..7e35ff7 --- /dev/null +++ b/include/libtf/defines.h @@ -0,0 +1,67 @@ +/* tf.h - libtf helper defines + * + * Copyright (C) 2009 Timo Teräs + * All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 or later as + * published by the Free Software Foundation. + * + * See http://www.gnu.org/ for details. + */ + +#ifndef TF_DEFINES_H +#define TF_DEFINES_H + +#include +#include +#include + +#ifndef NULL +#define NULL 0L +#endif + +#ifndef TRUE +#define TRUE 1 +#endif + +#ifndef FALSE +#define FALSE 0 +#endif + +#ifndef array_size +#define array_size(array) (sizeof(array) / sizeof((array)[0])) +#endif + +#ifndef offsetof +#define offsetof(type, member) __builtin_offsetof (type, member) +#endif + +#ifndef container_of +#define container_of(ptr, type, member) ({ \ + const typeof( ((type *)0)->member ) *__mptr = (ptr); \ + (type *)( (char *)__mptr - offsetof(type,member) );}) +#endif + +#ifndef likely +#define likely(x) __builtin_expect(!!(x), 1) +#endif + +#ifndef unlikely +#define unlikely(x) __builtin_expect(!!(x), 0) +#endif + +#define attribute_never_inline __attribute__((noinline)) +#define attribute_weak_function __attribute__((weak)) + +#define TF_BUG_ON(cond) if (cond) { \ + fprintf(stderr, "BUG: failure at %s:%d/%s(): %s!\n", \ + __FILE__, __LINE__, __func__, #cond); \ + abort(); \ +} + +#define TF_ALIGN(size,align) ((((size_t)(size)) + (align)-1) & ~((align)-1)) + +#define TF_EMPTY_ARRAY 0 + +#endif diff --git a/include/libtf/fiber.h b/include/libtf/fiber.h new file mode 100644 index 0000000..48d4924 --- /dev/null +++ b/include/libtf/fiber.h @@ -0,0 +1,52 @@ +/* tf.h - libtf main include + * + * Copyright (C) 2009 Timo Teräs + * All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 or later as + * published by the Free Software Foundation. + * + * See http://www.gnu.org/ for details. + */ + +#ifndef TF_FIBER_H +#define TF_FIBER_H + +#include +#include +#include +#include + +#ifndef TF_STACK_SIZE +#define TF_STACK_SIZE 4096 +#endif + +struct tf_fiber { + unsigned int ref_count; + struct tf_list_node queue_node; + char data[TF_EMPTY_ARRAY]; +}; + +typedef void (*tf_fiber_proc)(void *fiber); + +int tf_main(tf_fiber_proc fiber_main); + +void *tf_fiber_create(tf_fiber_proc fiber_main, int private_size); +void *tf_fiber_get(void *data); +void tf_fiber_put(void *data); + +int tf_schedule(int err); +void tf_kill(void *fiber); + +static inline int tf_yield(void) +{ + return tf_schedule(EAGAIN); +} + +static inline int tf_exit(void) +{ + return tf_schedule(EFAULT); +} + +#endif diff --git a/include/libtf/list.h b/include/libtf/list.h new file mode 100644 index 0000000..22b76a8 --- /dev/null +++ b/include/libtf/list.h @@ -0,0 +1,194 @@ +/* list.h - libtf single and double linked list macros + * + * Copyright (C) 2009 Timo Teräs + * All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 or later as + * published by the Free Software Foundation. + * + * See http://www.gnu.org/ for details. + * + * This based to some degree to the code in the linux kernel. This is subset + * of the functionality, and tf_list has separate head and node types. + */ + +#ifndef TF_LIST_H +#define TF_LIST_H + +#include + +struct tf_hlist_head { + struct tf_hlist_node *first; +}; + +struct tf_hlist_node { + struct tf_hlist_node *next; + struct tf_hlist_node **pprev; +}; + +static inline int tf_hlist_empty(const struct tf_hlist_head *h) +{ + return !h->first; +} + +static inline int tf_hlist_hashed(const struct tf_hlist_node *n) +{ + return n->pprev != NULL; +} + +static inline void tf_hlist_del(struct tf_hlist_node *n) +{ + *n->pprev = n->next; + n->next = NULL; + n->pprev = NULL; +} + +static inline void tf_hlist_add_head(struct tf_hlist_node *n, struct tf_hlist_head *h) +{ + struct tf_hlist_node *first = h->first; + + n->next = first; + n->pprev = &h->first; + h->first = n; +} + +static inline void tf_hlist_add_after(struct tf_hlist_node *n, struct tf_hlist_node *prev) +{ + n->next = prev->next; + n->pprev = &prev->next; + prev->next = n; +} + +static inline struct tf_hlist_node **tf_hlist_tail_ptr(struct tf_hlist_head *h) +{ + struct tf_hlist_node *n = h->first; + if (n == NULL) + return &h->first; + while (n->next != NULL) + n = n->next; + return &n->next; +} + +#define tf_hlist_entry(ptr, type, member) container_of(ptr,type,member) + +#define tf_hlist_for_each(pos, head) \ + for (pos = (head)->first; pos; pos = pos->next) + +#define tf_hlist_for_each_safe(pos, n, head) \ + for (pos = (head)->first; pos && ({ n = pos->next; 1; }); pos = n) + +#define tf_hlist_for_each_entry(tpos, pos, head, member) \ + for (pos = (head)->first; pos && \ + ({ tpos = tf_hlist_entry(pos, typeof(*tpos), member); 1;}); \ + pos = pos->next) + +#define tf_hlist_for_each_entry_safe(tpos, pos, n, head, member) \ + for (pos = (head)->first; \ + pos && ({ n = pos->next; 1; }) && \ + ({ tpos = tf_hlist_entry(pos, typeof(*tpos), member); 1;}); \ + pos = n) + + +struct tf_list_node { + struct tf_list_node *next, *prev; +}; + +struct tf_list_head { + struct tf_list_node node; +}; + +#define TF_LIST_INITIALIZER(l) { .next = &l, .prev = &l } +#define TF_LIST_HEAD_INITIALIZER(l) { .node = TF_LIST_INITIALIZER((l).node) } + +static inline void tf_list_init(struct tf_list_node *list) +{ + list->next = list; + list->prev = list; +} + +static inline void tf_list_init_head(struct tf_list_head *head) +{ + tf_list_init(&head->node); +} + +static inline void __tf_list_add(struct tf_list_node *new, + struct tf_list_node *prev, + struct tf_list_node *next) +{ + next->prev = new; + new->next = next; + new->prev = prev; + prev->next = new; +} + +static inline void tf_list_add_after(struct tf_list_node *new, struct tf_list_node *head) +{ + __tf_list_add(new, head, head->next); +} + +static inline void tf_list_add_before(struct tf_list_node *new, struct tf_list_node *head) +{ + __tf_list_add(new, head->prev, head); +} + +static inline void tf_list_add_head(struct tf_list_node *new, struct tf_list_head *head) +{ + tf_list_add_after(new, &head->node); +} + +static inline void tf_list_add_tail(struct tf_list_node *new, struct tf_list_head *head) +{ + tf_list_add_before(new, &head->node); +} + +static inline void __tf_list_del(struct tf_list_node * prev, struct tf_list_node *next) +{ + next->prev = prev; + prev->next = next; +} + +static inline void tf_list_del(struct tf_list_node *entry) +{ + __tf_list_del(entry->prev, entry->next); + entry->next = NULL; + entry->prev = NULL; +} + +static inline int tf_list_hashed(const struct tf_list_node *n) +{ + return n->next != n && n->next != NULL; +} + +static inline int tf_list_empty(const struct tf_list_head *h) +{ + return !tf_list_hashed(&h->node); +} + +#define tf_list_next(ptr, type, member) \ + (tf_list_hashed(ptr) ? container_of((ptr)->next,type,member) : NULL) + +#define tf_list_first(head, type, member) \ + tf_list_next(&((head)->node), type, member) + +#define tf_list_entry(ptr, type, member) container_of(ptr,type,member) + +#define tf_list_for_each(pos, head) \ + for (pos = (head)->next; pos != (head); pos = pos->next) + +#define tf_list_for_each_safe(pos, n, head) \ + for (pos = (head)->next, n = pos->next; pos != (head); \ + pos = n, n = pos->next) + +#define tf_list_for_each_entry(pos, head, member) \ + for (pos = tf_list_entry((head)->next, typeof(*pos), member); \ + &pos->member != (head); \ + pos = tf_list_entry(pos->member.next, typeof(*pos), member)) + +#define tf_list_for_each_entry_safe(pos, n, head, member) \ + for (pos = tf_list_entry((head)->next, typeof(*pos), member), \ + n = tf_list_entry(pos->member.next, typeof(*pos), member); \ + &pos->member != (head); \ + pos = n, n = tf_list_entry(n->member.next, typeof(*n), member)) + +#endif diff --git a/include/libtf/tf.h b/include/libtf/tf.h new file mode 100644 index 0000000..7ff7b25 --- /dev/null +++ b/include/libtf/tf.h @@ -0,0 +1,20 @@ +/* tf.h - libtf umbrella include + * + * Copyright (C) 2009 Timo Teräs + * All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 or later as + * published by the Free Software Foundation. + * + * See http://www.gnu.org/ for details. + */ + +#ifndef TF_H +#define TF_H + +#define TF_UCTX_H "uctx-setjmp.h" + +#include + +#endif -- cgit v1.2.3