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Gave asynchronous operations approximate POSIX signal semantics. This

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will enable us to cascade async operations, which is necessary in order to
properly support DNS.  (For example, an HTTP request may have to redirect
to a new location and will have to perform a new DNS lookup, so we can't
just rely on doing the name lookup at the time of parsing the initial
URL).

Anything other than HTTP is probably broken right now; I'll fix the others
up asap.
This commit is contained in:
Michael Brown
2007-01-15 08:49:10 +00:00
parent ec75b269d3
commit 4e20d73bb5
26 changed files with 656 additions and 248 deletions
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12
src/net/aoe.c
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@@ -56,7 +56,7 @@ static void aoe_done ( struct aoe_session *aoe, int rc ) {
aoe->command = NULL;
/* Mark async operation as complete */
async_done ( &aoe->aop, rc );
async_done ( &aoe->async, rc );
}
/**
@@ -309,17 +309,19 @@ void aoe_close ( struct aoe_session *aoe ) {
*
* @v aoe AoE session
* @v command ATA command
* @ret aop Asynchronous operation
* @v parent Parent asynchronous operation
* @ret rc Return status code
*
* Only one command may be issued concurrently per session. This call
* is non-blocking; use async_wait() to wait for the command to
* complete.
*/
struct async_operation * aoe_issue ( struct aoe_session *aoe,
struct ata_command *command ) {
int aoe_issue ( struct aoe_session *aoe, struct ata_command *command,
struct async *parent ) {
aoe->command = command;
aoe->status = 0;
aoe->command_offset = 0;
aoe_send_command ( aoe );
return &aoe->aop;
async_init ( &aoe->async, &default_async_operations, parent );
return 0;
}