diff options
Diffstat (limited to 'include/osmocom/core')
| -rw-r--r-- | include/osmocom/core/select.h | 1 | ||||
| -rw-r--r-- | include/osmocom/core/talloc.h | 28 |
2 files changed, 26 insertions, 3 deletions
diff --git a/include/osmocom/core/select.h b/include/osmocom/core/select.h index e4787b09..a200b6f3 100644 --- a/include/osmocom/core/select.h +++ b/include/osmocom/core/select.h @@ -51,6 +51,7 @@ int osmo_fd_register(struct osmo_fd *fd); void osmo_fd_unregister(struct osmo_fd *fd); void osmo_fd_close(struct osmo_fd *fd); int osmo_select_main(int polling); +int osmo_select_main_ctx(int polling); struct osmo_fd *osmo_fd_get_by_fd(int fd); diff --git a/include/osmocom/core/talloc.h b/include/osmocom/core/talloc.h index 191a463f..c68a56cf 100644 --- a/include/osmocom/core/talloc.h +++ b/include/osmocom/core/talloc.h @@ -1,5 +1,27 @@ -/*! \file talloc.h - * Convenience wrapper. libosmocore used to ship its own internal copy of - * talloc, before libtalloc became a standard component on most systems */ +/*! \file talloc.h */ #pragma once #include <talloc.h> + +/*! per-thread talloc contexts. This works around the problem that talloc is not + * thread-safe. However, one can simply have a different set of talloc contexts for each + * thread, and ensure that allocations made on one thread are always only free'd on that + * very same thread. + * WARNING: Users must make sure they free() on the same thread as they allocate!! */ +struct osmo_talloc_contexts { + /*! global per-thread talloc context. */ + void *global; + /*! volatile select-dispatch context. This context is completely free'd and + * re-created every time the main select loop in osmo_select_main() returns from + * select(2) and calls per-fd callback functions. This allows users of this + * facility to allocate temporary objects like string buffers, message buffers + * and the like which are automatically free'd when going into the next select() + * system call */ + void *select; +}; + +extern __thread struct osmo_talloc_contexts *osmo_ctx; + +/* short-hand #defines for the osmo talloc contexts (OTC) that can be used to pass + * to the various _c functions like msgb_alloc_c() */ +#define OTC_GLOBAL (osmo_ctx->global) +#define OTC_SELECT (osmo_ctx->select) |