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base: avoid use of deprecated base/printf.h

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Besides adapting the components to the use of base/log.h, the patch
cleans up a few base headers, i.e., it removes unused includes from
root/component.h, specifically base/heap.h and
ram_session/ram_session.h. Hence, components that relied on the implicit
inclusion of those headers have to manually include those headers now.

While adjusting the log messages, I repeatedly stumbled over the problem
that printing char * arguments is ambiguous. It is unclear whether to
print the argument as pointer or null-terminated string. To overcome
this problem, the patch introduces a new type 'Cstring' that allows the
caller to express that the argument should be handled as null-terminated
string. As a nice side effect, with this type in place, the optional len
argument of the 'String' class could be removed. Instead of supplying a
pair of (char const *, size_t), the constructor accepts a 'Cstring'.
This, in turn, clears the way let the 'String' constructor use the new
output mechanism to assemble a string from multiple arguments (and
thereby getting rid of snprintf within Genode in the near future).

To enforce the explicit resolution of the char * ambiguity, the 'char *'
overload of the 'print' function is marked as deleted.

Issue #1987
This commit is contained in:
Norman Feske
2016-07-13 19:07:09 +02:00
committed by Christian Helmuth
parent a5d3aa8373
commit 17c79a9e23
699 changed files with 5156 additions and 5865 deletions
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24
repos/base-linux/src/test/lx_rmap/main.cc
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@ -12,7 +12,7 @@
*/
/* Genode includes */
#include <base/printf.h>
#include <base/log.h>
#include <base/env.h>
#include <base/sleep.h>
#include <base/thread.h>
@ -57,18 +57,18 @@ int main()
size_t size(end - beg);
PLOG("blob region region [%016lx,%016lx) size=%zx", beg, end, size);
log("blob region region ", Hex_range<addr_t>(beg, size), " size=", size);
/* RAM dataspace attachment overlapping binary */
try {
Ram_dataspace_capability ds(env()->ram_session()->alloc(size));
PLOG("before RAM dataspace attach");
log("before RAM dataspace attach");
env()->rm_session()->attach_at(ds, beg);
PERR("after RAM dataspace attach -- ERROR");
error("after RAM dataspace attach -- ERROR");
sleep_forever();
} catch (Region_map::Region_conflict) {
PLOG("OK caught Region_conflict exception");
log("OK caught Region_conflict exception");
}
/* empty managed dataspace overlapping binary */
@ -77,12 +77,12 @@ int main()
Region_map_client rm(rm_connection.create(size));
Dataspace_capability ds(rm.dataspace());
PLOG("before sub-RM dataspace attach");
log("before sub-RM dataspace attach");
env()->rm_session()->attach_at(ds, beg);
PERR("after sub-RM dataspace attach -- ERROR");
error("after sub-RM dataspace attach -- ERROR");
sleep_forever();
} catch (Region_map::Region_conflict) {
PLOG("OK caught Region_conflict exception");
log("OK caught Region_conflict exception");
}
/* sparsely populated managed dataspace in free VM area */
@ -94,14 +94,14 @@ int main()
Dataspace_capability ds(rm.dataspace());
PLOG("before populated sub-RM dataspace attach");
log("before populated sub-RM dataspace attach");
char *addr = (char *)env()->rm_session()->attach(ds) + 0x1000;
PLOG("after populated sub-RM dataspace attach / before touch");
log("after populated sub-RM dataspace attach / before touch");
char const val = *addr;
*addr = 0x55;
PLOG("after touch (%x/%x)", val, *addr);
log("after touch (", val, "/", *addr, ")");
} catch (Region_map::Region_conflict) {
PERR("Caught Region_conflict exception -- ERROR");
error("Caught Region_conflict exception -- ERROR");
sleep_forever();
}
}