Threads: offloading of temp files writing to thread pools. The ngx_thread_write_chain_to_file() function introduced, which uses ngx_file_t thread_handler, thread_ctx and thread_task fields. The task context structure (ngx_thread_file_ctx_t) is the same for both reading and writing, and can be safely shared as long as operations are serialized. The task->handler field is now always set (and not only when task is allocated), as the same task can be used with different handlers. The thread_write flag is introduced in the ngx_temp_file_t structure to explicitly enable use of ngx_thread_write_chain_to_file() in ngx_write_chain_to_temp_file() when supported by caller. In collaboration with Valentin Bartenev.

# Copyright (C) Igor Sysoev
# Copyright (C) Nginx, Inc.


CFLAGS = -q -O2 -tWM $(CPU_OPT) -DL_ENDIAN

!if "$(SHA1_ASM)" == "YES"

sha1.lib:
	cd $(SHA1)
	bcc32 -c $(CFLAGS) -DSHA1_ASM sha1dgst.c
	tlib sha1.lib +sha1dgst.obj +"asm\s-win32.obj"

!else

sha1.lib:
	cd $(SHA1)
	bcc32 -c $(CFLAGS) sha1dgst.c
	tlib sha1.lib +sha1dgst.obj

!endif