oppunlockbm.nc

nesC写的heed算法

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/*
 * Authors:   Philip Levis <[e-mail]>
              Neil Patel
 * History:   Apr 14, 2003         Inception.
 *
 */

/**
 * @author Philip Levis <[e-mail]>
 * @author Neil Patel
 */


includes Bombilla;

module OPpunlockbM {
  provides interface BombillaBytecode;
  uses interface BombillaStacks as Stacks;
  uses interface BombillaTypes as Types;
  uses interface BombillaError;
}

implementation {

  command result_t BombillaBytecode.execute(uint8_t instr,
					    BombillaContext* context) {
    BombillaStackVariable* arg = call Stacks.popOperand(context);
    dbg(DBG_USR1, "VM (%i): Releasing locks", (int)context->which);
    if (!call Types.checkTypes(context, arg, BOMB_VAR_V)) {return FAIL;}
    if ((arg->value.var & context->heldSet) != arg->value.var) {
      call BombillaError.error(context, BOMB_ERROR_UNLOCK_INVALID);
      return FAIL;
    }
    dbg_clear(DBG_USR1, " 0x%hx\n", arg->value.var);
    context->releaseSet |= arg->value.var;
    return SUCCESS;
  }
}