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Merged nsock-engines from nmap-exp. This rewrite of the nsock library adds

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support for system-specific scalable IO notification facilities without breaking
portability. This initial version comes with an epoll(7)-based engine for Linux
and a select(2)-based fallback engine for all other operating systems.

This required an important refactoring of the library but the external API was
preserved.

The rewrite also tries to bring the coding standards of nmap to nsock.

See http://labs.unix-junkies.org/nsock_engines.html for the details.
This commit is contained in:
henri
2012-01-05 01:08:16 +00:00
parent 15f74d395f
commit 856cd00a17
31 changed files with 4496 additions and 2774 deletions
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92
nsock/src/nsock_read.c
View File

@@ -1,4 +1,3 @@
/***************************************************************************
* nsock_read.c -- This contains the functions for requesting various read *
* events from the nsock parallel socket event library *
@@ -58,48 +57,43 @@
#include "nsock_internal.h"
/* Read up to nlines lines (terminated with \n, which of course
inclues \r\n), or until EOF, or until the timeout, whichever comes
first. Note that NSE_STATUS_SUCCESS will be returned in the case
of EOF or tiemout if at least 1 char has been read. Also note that
you may get more than 'nlines' back -- we just stop once "at least"
'nlines' is read */
nsock_event_id nsock_readlines(nsock_pool nsp, nsock_iod ms_iod,
nsock_ev_handler handler, int timeout_msecs,
void *userdata, int nlines) {
msiod *nsi = (msiod *) ms_iod;
mspool *ms = (mspool *) nsp;
msevent *nse;
/* Read up to nlines lines (terminated with \n, which of course inclues \r\n),
* or until EOF, or until the timeout, whichever comes first. Note that
* NSE_STATUS_SUCCESS will be returned in the case of EOF or tiemout if at least
* 1 char has been read. Also note that you may get more than 'nlines' back --
* we just stop once "at least" 'nlines' is read */
nsock_event_id nsock_readlines(nsock_pool nsp, nsock_iod ms_iod, nsock_ev_handler handler, int timeout_msecs,
void *userdata, int nlines) {
msiod *nsi = (msiod *)ms_iod;
mspool *ms = (mspool *)nsp;
msevent *nse;
nse = msevent_new(ms, NSE_TYPE_READ, nsi, timeout_msecs, handler, userdata);
assert(nse);
if (ms->tracelevel > 0) {
if (nsi->peerlen > 0)
nsock_trace(ms, "Read request for %d lines from IOD #%li [%s:%hu] EID %li", nlines, nsi->id,
inet_ntop_ez(&nsi->peer, nsi->peerlen), nsi_peerport(nsi), nse->id);
else
nsock_trace(ms, "Read request for %d lines from IOD #%li (peer unspecified) EID %li", nlines,
nsi->id, nse->id);
nsock_trace(ms, "Read request for %d lines from IOD #%li [%s:%d] EID %li", nlines, nsi->id,
inet_ntop_ez(&nsi->peer, nsi->peerlen), nsi_peerport(nsi), nse->id);
else
nsock_trace(ms, "Read request for %d lines from IOD #%li (peer unspecified) EID %li", nlines, nsi->id, nse->id);
}
nse->readinfo.read_type = NSOCK_READLINES;
nse->readinfo.num = nlines;
nsp_add_event(ms, nse);
return nse->id;
}
/* Same as above, except it tries to read at least 'nbytes' instead of
'nlines'. */
nsock_event_id nsock_readbytes(nsock_pool nsp, nsock_iod ms_iod,
nsock_ev_handler handler, int timeout_msecs,
void *userdata, int nbytes) {
/* Same as above, except it tries to read at least 'nbytes' instead of 'nlines'. */
nsock_event_id nsock_readbytes(nsock_pool nsp, nsock_iod ms_iod, nsock_ev_handler handler, int timeout_msecs,
void *userdata, int nbytes) {
msiod *nsi = (msiod *) ms_iod;
mspool *ms = (mspool *) nsp;
msiod *nsi = (msiod *)ms_iod;
mspool *ms = (mspool *)nsp;
msevent *nse;
nse = msevent_new(ms, NSE_TYPE_READ, nsi, timeout_msecs, handler, userdata);
@@ -107,31 +101,26 @@ nsock_event_id nsock_readbytes(nsock_pool nsp, nsock_iod ms_iod,
if (ms->tracelevel > 0) {
if (nsi->peerlen > 0)
nsock_trace(ms, "Read request for %d bytes from IOD #%li [%s:%hu] EID %li", nbytes, nsi->id,
inet_ntop_ez(&nsi->peer, nsi->peerlen), nsi_peerport(nsi), nse->id);
else
nsock_trace(ms, "Read request for %d bytes from IOD #%li (peer unspecified) EID %li", nbytes,
nsi->id, nse->id);
nsock_trace(ms, "Read request for %d bytes from IOD #%li [%s:%d] EID %li", nbytes, nsi->id,
inet_ntop_ez(&nsi->peer, nsi->peerlen), nsi_peerport(nsi), nse->id);
else
nsock_trace(ms, "Read request for %d bytes from IOD #%li (peer unspecified) EID %li", nbytes, nsi->id, nse->id);
}
nse->readinfo.read_type = NSOCK_READBYTES;
nse->readinfo.num = nbytes;
nsp_add_event(ms, nse);
return nse->id;
nsp_add_event(ms, nse);
return nse->id;
}
/* The simplest read function -- returns NSE_STATUS_SUCCESS when it
reads anything, otherwise it returns timeout, eof, or error as
appropriate */
nsock_event_id nsock_read(nsock_pool nsp, nsock_iod ms_iod, nsock_ev_handler handler,
int timeout_msecs, void *userdata) {
msiod *nsi = (msiod *) ms_iod;
mspool *ms = (mspool *) nsp;
* reads anything, otherwise it returns timeout, eof, or error as appropriate */
nsock_event_id nsock_read(nsock_pool nsp, nsock_iod ms_iod, nsock_ev_handler handler, int timeout_msecs, void *userdata) {
msiod *nsi = (msiod *)ms_iod;
mspool *ms = (mspool *)nsp;
msevent *nse;
nse = msevent_new(ms, NSE_TYPE_READ, nsi, timeout_msecs, handler, userdata);
@@ -139,16 +128,17 @@ nsock_event_id nsock_read(nsock_pool nsp, nsock_iod ms_iod, nsock_ev_handler han
if (ms->tracelevel > 0) {
if (nsi->peerlen > 0)
nsock_trace(ms, "Read request from IOD #%li [%s:%hu] (timeout: %dms) EID %li", nsi->id, inet_ntop_ez(&nsi->peer, nsi->peerlen), nsi_peerport(nsi), timeout_msecs, nse->id);
else
nsock_trace(ms, "Read request from IOD #%li (peer unspecified) (timeout: %dms) EID %li", nsi->id, timeout_msecs, nse->id);
nsock_trace(ms, "Read request from IOD #%li [%s:%d] (timeout: %dms) EID %li", nsi->id,
inet_ntop_ez(&nsi->peer, nsi->peerlen), nsi_peerport(nsi), timeout_msecs, nse->id);
else
nsock_trace(ms, "Read request from IOD #%li (peer unspecified) (timeout: %dms) EID %li",
nsi->id, timeout_msecs, nse->id);
}
nse->readinfo.read_type = NSOCK_READ;
nsp_add_event(ms, nse);
return nse->id;
nsp_add_event(ms, nse);
return nse->id;
}